No problem, we've got 81313404 and 45584999 to multiply
81313404 × 45584999 = 45584999 × (81313404)
+ 45584999 × 4 producing 182339996
+ 45584999 × 00 which equals 0
+ 45584999 × 400 resulting in 18233999600
+ 45584999 × 3000 yielding 136754997000
+ 45584999 × 10000 what gives us 455849990000
+ 45584999 × 300000 yielding 13675499700000
+ 45584999 × 1000000 that results in 45584999000000
+ 45584999 × 80000000 yielding 3646799920000000

= 3706671440026596
