Divide Give the Answer in Scientific Notation $\frac { 3.48 \times 10 ^ { - 13 } } { 8.7 \times 10 ^ { - 6 } }$

Divide. Give the answer in scientific notation. $\frac { 3.48 \times 10 ^ { - 13 } } { 8.7 \times 10 ^ { - 6 } }$ $\times 10 ^ { - }$