Answer: The solution is 0.156
Step-by-step explanation: if we want to do the division 13/83.2 by hand, a good method can transform both numbers into whole numbers.
You can do this by multiplying both denominator and numerator by 10 (the number of zeros must be equal to the number of numbers after the decimal point, in this case, we have only one, so there is one zero).
Now we have the division (13*10)/(83.2*10) = 130/832 which is easier to solve by hand:
130/832 = 0.156