We're going to solve 87641673 multiplied by 21388229
87641673 × 21388229 = 21388229 × (87641673)
+ 21388229 × 3 what gives us 64164687
+ 21388229 × 70 that equals 1497176030
+ 21388229 × 600 giving us 12832937400
+ 21388229 × 1000 producing 21388229000
+ 21388229 × 40000 that equals 855529160000
+ 21388229 × 600000 yielding 12832937400000
+ 21388229 × 7000000 giving us 149717603000000
+ 21388229 × 80000000 that results in 1711058320000000

= 1874500172067117
