No problem, we've got 55163478 and 80156455 to multiply
55163478 × 80156455 = 80156455 × (55163478)
+ 80156455 × 8 that equals 641251640
+ 80156455 × 70 that is equal 5610951850
+ 80156455 × 400 resulting in 32062582000
+ 80156455 × 3000 which equals 240469365000
+ 80156455 × 60000 what gives us 4809387300000
+ 80156455 × 100000 which equals 8015645500000
+ 80156455 × 5000000 that results in 400782275000000
+ 80156455 × 50000000 yielding 4007822750000000

= 4421708841950490
