Alright, let's work through 83944948 times 83250139 step by step
83944948 × 83250139 = 83250139 × (83944948)
+ 83250139 × 8 yielding 666001112
+ 83250139 × 40 which equals 3330005560
+ 83250139 × 900 which equals 74925125100
+ 83250139 × 4000 producing 333000556000
+ 83250139 × 40000 that is equal 3330005560000
+ 83250139 × 900000 what gives us 74925125100000
+ 83250139 × 3000000 that equals 249750417000000
+ 83250139 × 80000000 producing 6660011120000000

= 6988428589347772
