Alright, let's work through 29420957 times 71910607 step by step
29420957 × 71910607 = 71910607 × (29420957)
+ 71910607 × 7 producing 503374249
+ 71910607 × 50 that is equal 3595530350
+ 71910607 × 900 resulting in 64719546300
+ 71910607 × 0000 that equals 0
+ 71910607 × 20000 yielding 1438212140000
+ 71910607 × 400000 yielding 28764242800000
+ 71910607 × 9000000 giving us 647195463000000
+ 71910607 × 20000000 that results in 1438212140000000

= 2115678876390899
