No problem, we've got 81874919 and 42184277 to multiply
81874919 × 42184277 = 42184277 × (81874919)
+ 42184277 × 9 what gives us 379658493
+ 42184277 × 10 producing 421842770
+ 42184277 × 900 that results in 37965849300
+ 42184277 × 4000 resulting in 168737108000
+ 42184277 × 70000 which equals 2952899390000
+ 42184277 × 800000 yielding 33747421600000
+ 42184277 × 1000000 giving us 42184277000000
+ 42184277 × 80000000 yielding 3374742160000000

= 3453834262448563
