>>509

エムシラ御大のほうが正しいらしいYo！

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American system.

10^6: million
10^9: billion
10^12: trillion
10^15: quadrillion
10^18: quintillion

Anyone with a rudimentary knowledge of Latin knows that this
is slightly wrong (quad=4, for example, but 4 * x = 15 leads
to x = 7/2).

British system.

10^6: million
10^12: billion
10^18: trillion
10^24: quadrillion
10^30: quintillion