Alright, let's work through 83020531 times 84507710 step by step
83020531 × 84507710 = 84507710 × (83020531)
+ 84507710 × 1 that equals 84507710
+ 84507710 × 30 resulting in 2535231300
+ 84507710 × 500 what gives us 42253855000
+ 84507710 × 0000 giving us 0
+ 84507710 × 20000 what gives us 1690154200000
+ 84507710 × 000000 giving us 0
+ 84507710 × 3000000 that results in 253523130000000
+ 84507710 × 80000000 which equals 6760616800000000

= 7015874957794010
