Alright, let's work through 88978921 times 82736299 step by step
88978921 × 82736299 = 82736299 × (88978921)
+ 82736299 × 1 giving us 82736299
+ 82736299 × 20 that results in 1654725980
+ 82736299 × 900 that results in 74462669100
+ 82736299 × 8000 giving us 661890392000
+ 82736299 × 70000 resulting in 5791540930000
+ 82736299 × 900000 yielding 74462669100000
+ 82736299 × 8000000 what gives us 661890392000000
+ 82736299 × 80000000 that equals 6618903920000000

= 7361786612553379
