Alright, let's work through 97740965 times 15540671 step by step
97740965 × 15540671 = 15540671 × (97740965)
+ 15540671 × 5 yielding 77703355
+ 15540671 × 60 that equals 932440260
+ 15540671 × 900 that is equal 13986603900
+ 15540671 × 0000 that equals 0
+ 15540671 × 40000 producing 621626840000
+ 15540671 × 700000 yielding 10878469700000
+ 15540671 × 7000000 resulting in 108784697000000
+ 15540671 × 90000000 which equals 1398660390000000

= 1518960180287515
