No problem, we've got 80913776 and 49735695 to multiply
80913776 × 49735695 = 49735695 × (80913776)
+ 49735695 × 6 resulting in 298414170
+ 49735695 × 70 that is equal 3481498650
+ 49735695 × 700 what gives us 34814986500
+ 49735695 × 3000 yielding 149207085000
+ 49735695 × 10000 which equals 497356950000
+ 49735695 × 900000 yielding 44762125500000
+ 49735695 × 0000000 that equals 0
+ 49735695 × 80000000 giving us 3978855600000000

= 4024302884434320
