In the following question, select the missing number from the given alternatives :

In each row, the third number is multiple of

both the first and the second numbers.

First Row

$frac{336}{7}=48 ; frac{336}{3}=112$

Second Row

$frac{110}{11}=10 ; frac{110}{2}=55$

Third Row

$frac{504}{8}=63 ; frac{504}{3}=168$