Alright, let's work through 20137919 times 70442134 step by step
20137919 × 70442134 = 70442134 × (20137919)
+ 70442134 × 9 that equals 633979206
+ 70442134 × 10 yielding 704421340
+ 70442134 × 900 yielding 63397920600
+ 70442134 × 7000 producing 493094938000
+ 70442134 × 30000 that results in 2113264020000
+ 70442134 × 100000 producing 7044213400000
+ 70442134 × 0000000 giving us 0
+ 70442134 × 20000000 producing 1408842680000000

= 1418557988679146
