No problem, we've got 18210542 and 80958728 to multiply
18210542 × 80958728 = 80958728 × (18210542)
+ 80958728 × 2 what gives us 161917456
+ 80958728 × 40 that is equal 3238349120
+ 80958728 × 500 which equals 40479364000
+ 80958728 × 0000 giving us 0
+ 80958728 × 10000 that is equal 809587280000
+ 80958728 × 200000 giving us 16191745600000
+ 80958728 × 8000000 producing 647669824000000
+ 80958728 × 10000000 giving us 809587280000000

= 1474302316510576
