Alright, let's work through 18642143 times 77679183 step by step
18642143 × 77679183 = 77679183 × (18642143)
+ 77679183 × 3 yielding 233037549
+ 77679183 × 40 that equals 3107167320
+ 77679183 × 100 yielding 7767918300
+ 77679183 × 2000 which equals 155358366000
+ 77679183 × 40000 that equals 3107167320000
+ 77679183 × 600000 what gives us 46607509800000
+ 77679183 × 8000000 yielding 621433464000000
+ 77679183 × 10000000 that results in 776791830000000

= 1448106437609169
