No problem, we've got 81378455 and 32130808 to multiply
81378455 × 32130808 = 32130808 × (81378455)
+ 32130808 × 5 that is equal 160654040
+ 32130808 × 50 what gives us 1606540400
+ 32130808 × 400 that equals 12852323200
+ 32130808 × 8000 that equals 257046464000
+ 32130808 × 70000 producing 2249156560000
+ 32130808 × 300000 resulting in 9639242400000
+ 32130808 × 1000000 yielding 32130808000000
+ 32130808 × 80000000 producing 2570464640000000

= 2614755512941640
