No problem, we've got 40120257 and 80941357 to multiply
40120257 × 80941357 = 80941357 × (40120257)
+ 80941357 × 7 that is equal 566589499
+ 80941357 × 50 giving us 4047067850
+ 80941357 × 200 resulting in 16188271400
+ 80941357 × 0000 resulting in 0
+ 80941357 × 20000 which equals 1618827140000
+ 80941357 × 100000 which equals 8094135700000
+ 80941357 × 0000000 which equals 0
+ 80941357 × 40000000 giving us 3237654280000000

= 3247388044768749
