Alright, let's work through 55057677 times 15964436 step by step
55057677 × 15964436 = 15964436 × (55057677)
+ 15964436 × 7 giving us 111751052
+ 15964436 × 70 what gives us 1117510520
+ 15964436 × 600 which equals 9578661600
+ 15964436 × 7000 what gives us 111751052000
+ 15964436 × 50000 producing 798221800000
+ 15964436 × 000000 which equals 0
+ 15964436 × 5000000 resulting in 79822180000000
+ 15964436 × 50000000 that equals 798221800000000

= 878964760775172
