Alright, let's work through 78972987 times 11352070 step by step
78972987 × 11352070 = 11352070 × (78972987)
+ 11352070 × 7 giving us 79464490
+ 11352070 × 80 giving us 908165600
+ 11352070 × 900 that equals 10216863000
+ 11352070 × 2000 which equals 22704140000
+ 11352070 × 70000 that equals 794644900000
+ 11352070 × 900000 yielding 10216863000000
+ 11352070 × 8000000 that equals 90816560000000
+ 11352070 × 70000000 what gives us 794644900000000

= 896506876533090
