Alright, let's work through 79648005 times 12557731 step by step
79648005 × 12557731 = 12557731 × (79648005)
+ 12557731 × 5 that results in 62788655
+ 12557731 × 00 yielding 0
+ 12557731 × 000 that results in 0
+ 12557731 × 8000 giving us 100461848000
+ 12557731 × 40000 which equals 502309240000
+ 12557731 × 600000 which equals 7534638600000
+ 12557731 × 9000000 what gives us 113019579000000
+ 12557731 × 70000000 what gives us 879041170000000

= 1000198221476655
