No problem, we've got 80780472 and 64211052 to multiply
80780472 × 64211052 = 64211052 × (80780472)
+ 64211052 × 2 giving us 128422104
+ 64211052 × 70 resulting in 4494773640
+ 64211052 × 400 giving us 25684420800
+ 64211052 × 0000 resulting in 0
+ 64211052 × 80000 which equals 5136884160000
+ 64211052 × 700000 giving us 44947736400000
+ 64211052 × 0000000 what gives us 0
+ 64211052 × 80000000 that equals 5136884160000000

= 5186999088176544
