`3sqrt(4663)+346=?div31.003`

3sqrt(5826)+456=?div31.001

What approximate value should come in place of the question mark (?) in the following questions ? (Note : You are not expected to calculate the exact value) root2(4663) + 349 = ? + 21.003

x% "of" 275+sqrt(625)=450div3+40

sqrt(1521)div3xx12=?

3sqrt(512)div 4sqrt(16)div sqrt(576)=?

sqrt(3) div 4sqrt(12)= ______