Alright, let's work through 71098973 times 12307172 step by step
71098973 × 12307172 = 12307172 × (71098973)
+ 12307172 × 3 that equals 36921516
+ 12307172 × 70 that results in 861502040
+ 12307172 × 900 resulting in 11076454800
+ 12307172 × 8000 that results in 98457376000
+ 12307172 × 90000 resulting in 1107645480000
+ 12307172 × 000000 that equals 0
+ 12307172 × 1000000 what gives us 12307172000000
+ 12307172 × 70000000 that equals 861502040000000

= 875027289734356
