No problem, we've got 80393755 and 38599658 to multiply
80393755 × 38599658 = 38599658 × (80393755)
+ 38599658 × 5 producing 192998290
+ 38599658 × 50 giving us 1929982900
+ 38599658 × 700 which equals 27019760600
+ 38599658 × 3000 that results in 115798974000
+ 38599658 × 90000 that is equal 3473969220000
+ 38599658 × 300000 giving us 11579897400000
+ 38599658 × 0000000 producing 0
+ 38599658 × 80000000 what gives us 3087972640000000

= 3103171448335790
