3+5+6=151872
5+5+6=253094
5+6+7=303585
5+5+3=251573
then 9+4+7=_______?

Solution

for a+b+c, first two digits are obtained by multiplying a and b
next two digits are obtained by multiplying a and c
to obtain last two digits, find out (a*b)+(a*c)-c, and then swap the digits of the number obtained
For example,
for, 3+5+6
first two digits are 3*5 = 15
next two digits are 3*6 = 18, and
(3*5)+(3*6) - 6 = 27
so, the last two digits are 72