Estimate the Quotient Without a Calculator $\left( 8 \times 10 ^ { 16 } \right) \div \left( 2 \times 10 ^ { 9 } \right)$

Multiple Choice

Estimate the quotient without a calculator. $\left( 8 \times 10 ^ { 16 } \right) \div \left( 2 \times 10 ^ { 9 } \right)$

A) $4 \times 10 ^ { 7 }$
B) $4 \times 10 ^ { 25 }$
C) $16 \times 10 ^ { 7 }$
D) $4 \times 10 ^ { 14 }$
E) $7 \times 10 ^ { 7 }$