Alright, let's work through 77746928 times 40282477 step by step
77746928 × 40282477 = 40282477 × (77746928)
+ 40282477 × 8 producing 322259816
+ 40282477 × 20 that is equal 805649540
+ 40282477 × 900 that is equal 36254229300
+ 40282477 × 6000 that equals 241694862000
+ 40282477 × 40000 producing 1611299080000
+ 40282477 × 700000 yielding 28197733900000
+ 40282477 × 7000000 that is equal 281977339000000
+ 40282477 × 70000000 giving us 2819773390000000

= 3131838838980656
