Alright, let's work through 88924491 times 79656489 step by step
88924491 × 79656489 = 79656489 × (88924491)
+ 79656489 × 1 resulting in 79656489
+ 79656489 × 90 which equals 7169084010
+ 79656489 × 400 yielding 31862595600
+ 79656489 × 4000 that results in 318625956000
+ 79656489 × 20000 which equals 1593129780000
+ 79656489 × 900000 that is equal 71690840100000
+ 79656489 × 8000000 resulting in 637251912000000
+ 79656489 × 80000000 what gives us 6372519120000000

= 7083412739172099
