Answer:
36.156
Step-by-step explanation:
Multiply as 7.86 and 4.6 ignoring the decimals for now. You get a solution of 36156.
You count how many decimal points are in the problem (2 from 7.86 and 1 from 4.6) and you put it in the answer by moving the decimal to the left the amount of decimals in the problem this leave the answer as 36.156