Alright, let's work through 50709918 times 42206780 step by step
50709918 × 42206780 = 42206780 × (50709918)
+ 42206780 × 8 giving us 337654240
+ 42206780 × 10 producing 422067800
+ 42206780 × 900 resulting in 37986102000
+ 42206780 × 9000 producing 379861020000
+ 42206780 × 00000 producing 0
+ 42206780 × 700000 what gives us 29544746000000
+ 42206780 × 0000000 giving us 0
+ 42206780 × 50000000 resulting in 2110339000000000

= 2140302352844040
