No problem, we've got 67631172 and 18004087 to multiply
67631172 × 18004087 = 18004087 × (67631172)
+ 18004087 × 2 what gives us 36008174
+ 18004087 × 70 yielding 1260286090
+ 18004087 × 100 yielding 1800408700
+ 18004087 × 1000 resulting in 18004087000
+ 18004087 × 30000 that is equal 540122610000
+ 18004087 × 600000 producing 10802452200000
+ 18004087 × 7000000 resulting in 126028609000000
+ 18004087 × 60000000 which equals 1080245220000000

= 1217637504599964
