Alright, let's work through 85125193 times 81507974 step by step
85125193 × 81507974 = 81507974 × (85125193)
+ 81507974 × 3 that is equal 244523922
+ 81507974 × 90 that is equal 7335717660
+ 81507974 × 100 giving us 8150797400
+ 81507974 × 5000 resulting in 407539870000
+ 81507974 × 20000 giving us 1630159480000
+ 81507974 × 100000 what gives us 8150797400000
+ 81507974 × 5000000 resulting in 407539870000000
+ 81507974 × 80000000 resulting in 6520637920000000

= 6938382017788982
