1.2 x 10 ^-16 / 9.11 x 10^31

Hate to correct you CPhill, but I think this may be:

(1.2 x 10 ^-16) / (9.11 x 10^31) =

(1.2 / 9.11) x (10^-47) ≈

.1317 x 10^-47 ≈

1.317 x 10^-48 (in scientific notation)

because 10^-16 / 10^31 = 10^(-16 - 31) = 10^-47

(1.2 x 10 ^-16) / (9.11 x 10^31) =

(1.2 / 9.11) x (10^-48) ≈

.1317 x 10^-48 ≈

1.317 x 10^-49  (in scientific notation)

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Edit.....answer is 1.317 x 10^-48

Thanks for pointing out my mistake, ND !!!

Thanks, ND.....I can't add !!!