Correction for the size of a Baseball
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How big is 207 gills?
It's about 100 times as big as a Baseball
The size of a Baseball is about 1.7784024280 gills.
Per Major League Baseball rules, a baseball must measure between about 1.7053539480 gills and 1.8514509080 gills. A major league pitcher can throw a baseball at up to 150 kph (91 mph) in a fastball pitch.