Alright, let's work through 84096982 times 89509155 step by step
84096982 × 89509155 = 89509155 × (84096982)
+ 89509155 × 2 giving us 179018310
+ 89509155 × 80 that is equal 7160732400
+ 89509155 × 900 that is equal 80558239500
+ 89509155 × 6000 that is equal 537054930000
+ 89509155 × 90000 which equals 8055823950000
+ 89509155 × 000000 yielding 0
+ 89509155 × 4000000 yielding 358036620000000
+ 89509155 × 80000000 which equals 7160732400000000

= 7527449796870210
