No problem, we've got 20581805 and 67277694 to multiply
20581805 × 67277694 = 67277694 × (20581805)
+ 67277694 × 5 producing 336388470
+ 67277694 × 00 producing 0
+ 67277694 × 800 what gives us 53822155200
+ 67277694 × 1000 what gives us 67277694000
+ 67277694 × 80000 producing 5382215520000
+ 67277694 × 500000 that equals 33638847000000
+ 67277694 × 0000000 giving us 0
+ 67277694 × 20000000 that results in 1345553880000000

= 1384696378757670
