No problem, we've got 80081357 and 70989534 to multiply
80081357 × 70989534 = 70989534 × (80081357)
+ 70989534 × 7 yielding 496926738
+ 70989534 × 50 yielding 3549476700
+ 70989534 × 300 which equals 21296860200
+ 70989534 × 1000 which equals 70989534000
+ 70989534 × 80000 that equals 5679162720000
+ 70989534 × 000000 producing 0
+ 70989534 × 0000000 resulting in 0
+ 70989534 × 80000000 producing 5679162720000000

= 5684938215517638
