Alright, let's work through 20204298 times 77013108 step by step
20204298 × 77013108 = 77013108 × (20204298)
+ 77013108 × 8 that is equal 616104864
+ 77013108 × 90 yielding 6931179720
+ 77013108 × 200 yielding 15402621600
+ 77013108 × 4000 resulting in 308052432000
+ 77013108 × 00000 giving us 0
+ 77013108 × 200000 that results in 15402621600000
+ 77013108 × 0000000 what gives us 0
+ 77013108 × 20000000 that results in 1540262160000000

= 1555995783938184
