Answer
$9 \times 1 \times 5 = 45$
Work Step by Step
$a \times b\times c =$ General formula for finding the answer
1. Multiply the first two numbers together $(a \times b)$
$9 \times 1 = 9$
2. Multiply the previous number in Step #1 with the last
$((a \times b) \times c)$
$9 \times 5 = 45$
