How many significant figures should the product 62.25 x 37.5 have?

You have to be very careful when you use significant figures (sig. figs.). In biology, you want 2 sig figs. In math, maybe 2 or 3 sig figs (depends on the question) If you are even off by a decimal, your answer is wrong. Significant figures are a special type of rounding, rounding where I only take certain decimal places into account (and the rest are garbage). You could do all of this in a calculator and then count how many decimals you want.

359 

EXPLANATION
IN MULTIPLICATION AND DIVISION WE ROUND OFF AT LEAST SIGNIFICANT FIGURES (EXAMPLE) IN THE ORIGINAL EXAMPLE SO IT'D BE 4.11/1.3= 3.425 SO THE ANSWER WOULD BE 3.4

The answer is 1 because you have to flip the sign when dividing by negative number and 3