IAS Aptitude Question

5
Latest IAS Aptitude Question :
 5+7+4=364730
 9+6+3=456990 
 8+2+9=912672 ,then
 7+3+5=??????
"It is very easy to defeat someone, But It's very hard to win someone"                                                                                        - Dr.A.P.J.Abdul Kalam
the answer is: 503156...
“Don't take rest after your first victory because if you fail in second, more lips are waiting to say that your first victory was just luck.”-Dr. A P J Abdul Kalam.
@indiainspire How to u prove it! Give clear Answer ßro.
"It is very easy to defeat someone, But It's very hard to win someone"                                                                                        - Dr.A.P.J.Abdul Kalam