Alright, let's work through 71071207 times 57309790 step by step
71071207 × 57309790 = 57309790 × (71071207)
+ 57309790 × 7 which equals 401168530
+ 57309790 × 00 that is equal 0
+ 57309790 × 200 that is equal 11461958000
+ 57309790 × 1000 giving us 57309790000
+ 57309790 × 70000 producing 4011685300000
+ 57309790 × 000000 resulting in 0
+ 57309790 × 1000000 yielding 57309790000000
+ 57309790 × 70000000 which equals 4011685300000000

= 4073075948216530
