No problem, we've got 64224812 and 80670432 to multiply
64224812 × 80670432 = 80670432 × (64224812)
+ 80670432 × 2 that is equal 161340864
+ 80670432 × 10 giving us 806704320
+ 80670432 × 800 yielding 64536345600
+ 80670432 × 4000 which equals 322681728000
+ 80670432 × 20000 resulting in 1613408640000
+ 80670432 × 200000 which equals 16134086400000
+ 80670432 × 4000000 that results in 322681728000000
+ 80670432 × 60000000 yielding 4840225920000000

= 5181043329158784
