No problem, we've got 67117988 and 20840404 to multiply
67117988 × 20840404 = 20840404 × (67117988)
+ 20840404 × 8 that is equal 166723232
+ 20840404 × 80 what gives us 1667232320
+ 20840404 × 900 that results in 18756363600
+ 20840404 × 7000 yielding 145882828000
+ 20840404 × 10000 resulting in 208404040000
+ 20840404 × 100000 which equals 2084040400000
+ 20840404 × 7000000 yielding 145882828000000
+ 20840404 × 60000000 which equals 1250424240000000

= 1398765985587152
