No problem, we've got 99473424 and 63998435 to multiply
99473424 × 63998435 = 63998435 × (99473424)
+ 63998435 × 4 which equals 255993740
+ 63998435 × 20 producing 1279968700
+ 63998435 × 400 which equals 25599374000
+ 63998435 × 3000 producing 191995305000
+ 63998435 × 70000 which equals 4479890450000
+ 63998435 × 400000 producing 25599374000000
+ 63998435 × 9000000 resulting in 575985915000000
+ 63998435 × 90000000 giving us 5759859150000000

= 6366143460091440
