Simplify expression 181,424!/18,1422!

Question

do not need the final numeric answer, just the product that this expression simplifies to

Answer 1

181,424 x 181,423 =

(181,424)(181,423) =

3.291448635 x 10^10 in scientific notation, the answer using a standard calculator

you can cancel 181,422! from both numerator and denominator leaving only 2 terms to multiply in the numerator

It's similar to 8!/6! where you can cancel 6! leaving just 8x7 = 56