Alright, let's work through 21274271 times 87667209 step by step
21274271 × 87667209 = 87667209 × (21274271)
+ 87667209 × 1 what gives us 87667209
+ 87667209 × 70 resulting in 6136704630
+ 87667209 × 200 resulting in 17533441800
+ 87667209 × 4000 that is equal 350668836000
+ 87667209 × 70000 yielding 6136704630000
+ 87667209 × 200000 that equals 17533441800000
+ 87667209 × 1000000 yielding 87667209000000
+ 87667209 × 20000000 what gives us 1753344180000000

= 1865055962079639
