It's about thirty times as long as a Semitrailer
In other words, 842.90 cubits is 26.34 times the length of a Semitrailer, and the length of a Semitrailer is 0.0380 times that amount.(a.k.a. semi-trailer truck, a.k.a. semi, a.k.a. tractor-trailer, a.k.a. truck and trailer, a.k.a. eighteen-wheeler, a.k.a. big rig, a.k.a. Mack truck, a.k.a. transport, a.k.a. lorry, a.k.a. artic; for box truck; United States Federal length limits)
According to the United States Department of Transportation (DOT), the maximum allowable length of a semitrailer pulled by a road tractor truck is 32 cubits (unless superseded by state law). These regulations also allow the vehicles to tow up to 36,000 kg in gross weight.
It's about one-thirtieth as deep as The Challenger Deep (Marianas Trench)
In other words, 842.90 cubits is 0.03535 times the depth of The Challenger Deep (Marianas Trench), and the depth of The Challenger Deep (Marianas Trench) is 28.289 times that amount.(near Marianas Islands, a.k.a. Ladrones Islands, northwestern Pacific Ocean) (depth below sea level)
The Challenger Deep, at the southern end of the Marianas Trench, reaches a depth of 23,845 cubits below sea level. The first manned expedition to the bottom of Challenger Deep took 4 hours and 48 minutes in 1960. This was the only manned descent to the floor of the Trench until 2012, when director James Cameron made the trip; several other descents have been made since then.
It's about one-thirtieth as tall as Maxwell Montes
In other words, 842.90 cubits is 0.04 times the height of Maxwell Montes, and the height of Maxwell Montes is 29 times that amount.(Ishtar Terra, Venus)
Maxwell Montes rises to a total height of 24,000 cubits. Since Venus does not seem to have the kind of tectonic activity which gives rise to mountains on Earth, the origin of the Venusian mountain remains the subject of some dispute.
It's about thirty times as tall as a Brachiosaurus
In other words, 842.90 cubits is 30 times the height of a Brachiosaurus, and the height of a Brachiosaurus is 0.03 times that amount.(based on comparable bone measurements, height to head)
Dinosaurs in the genus Brachiosaurus had an estimated height (at the head with neck fully extended) of up to 28 cubits. A resin cast of the first Brachiosaurus specimen, owned by the Field Museum in Chicago, is currently on display at the O'Hare International Airport.
It's about forty times as tall as a Telephone Pole
In other words, 842.90 cubits is 35 times the height of a Telephone Pole, and the height of a Telephone Pole is 0.03 times that amount.(a.k.a. Utility Pole, a.k.a Power Pole, a.k.a. Telegraph Pole, a.k.a. Telegraph Post, a.k.a. Hydro Pole) (exposed height; per Florida Public Service Commission average)
A standard telephone pole is 24 cubits tall. Despite alternatives, most telephone poles in the US are made of wood — most commonly pine — and have a lifespan of 25 to 50 years, depending on climate and preservatives applied.
It's about 45 times as long as a London bus
In other words, 842.90 cubits is 46 times the length of a London bus, and the length of a London bus is 0.022 times that amount.(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 18.30 cubits in length. The buses were said to be well-designed for travel in the London traffic, as they offered an open door for riders to board and exit even while the bus was moving at low speeds, and a full-time conductor to collect fares.
It's about 70 times as tall as a Giraffe