Alright, let's work through 83020475 times 83721296 step by step
83020475 × 83721296 = 83721296 × (83020475)
+ 83721296 × 5 that equals 418606480
+ 83721296 × 70 giving us 5860490720
+ 83721296 × 400 what gives us 33488518400
+ 83721296 × 0000 resulting in 0
+ 83721296 × 20000 that results in 1674425920000
+ 83721296 × 000000 yielding 0
+ 83721296 × 3000000 that is equal 251163888000000
+ 83721296 × 80000000 which equals 6697703680000000

= 6950581761535600
