No problem, we've got 80709665 and 55448294 to multiply
80709665 × 55448294 = 55448294 × (80709665)
+ 55448294 × 5 that is equal 277241470
+ 55448294 × 60 what gives us 3326897640
+ 55448294 × 600 what gives us 33268976400
+ 55448294 × 9000 that is equal 499034646000
+ 55448294 × 00000 giving us 0
+ 55448294 × 700000 producing 38813805800000
+ 55448294 × 0000000 giving us 0
+ 55448294 × 80000000 that results in 4435863520000000

= 4475213233561510
