Alright, let's work through 52142767 times 20216379 step by step
52142767 × 20216379 = 20216379 × (52142767)
+ 20216379 × 7 that is equal 141514653
+ 20216379 × 60 that equals 1212982740
+ 20216379 × 700 yielding 14151465300
+ 20216379 × 2000 that equals 40432758000
+ 20216379 × 40000 that equals 808655160000
+ 20216379 × 100000 what gives us 2021637900000
+ 20216379 × 2000000 giving us 40432758000000
+ 20216379 × 50000000 resulting in 1010818950000000

= 1054137939780693
