No problem, we've got 21097419 and 87167372 to multiply
21097419 × 87167372 = 87167372 × (21097419)
+ 87167372 × 9 what gives us 784506348
+ 87167372 × 10 that equals 871673720
+ 87167372 × 400 that equals 34866948800
+ 87167372 × 7000 resulting in 610171604000
+ 87167372 × 90000 yielding 7845063480000
+ 87167372 × 000000 that results in 0
+ 87167372 × 1000000 giving us 87167372000000
+ 87167372 × 20000000 what gives us 1743347440000000

= 1839006570212868
