Verified Answer :

(2.310^-3) / (4.610^-7)

(2.30.001) / (4.60.0000001)  10^-3=0.001 & 10^-7=0.0000001

(0.0023) / (0.00000046)   2.30.001=0.0023 & 4.60.0000001=0.00000046

5000  0.0023/0.00000046

So the answer is 5000