No problem, we've got 80215458 and 61327056 to multiply
80215458 × 61327056 = 61327056 × (80215458)
+ 61327056 × 8 yielding 490616448
+ 61327056 × 50 producing 3066352800
+ 61327056 × 400 that results in 24530822400
+ 61327056 × 5000 resulting in 306635280000
+ 61327056 × 10000 giving us 613270560000
+ 61327056 × 200000 resulting in 12265411200000
+ 61327056 × 0000000 giving us 0
+ 61327056 × 80000000 giving us 4906164480000000

= 4919377884831648
