No problem, we've got 51287442 and 13204583 to multiply
51287442 × 13204583 = 13204583 × (51287442)
+ 13204583 × 2 that is equal 26409166
+ 13204583 × 40 that results in 528183320
+ 13204583 × 400 giving us 5281833200
+ 13204583 × 7000 resulting in 92432081000
+ 13204583 × 80000 that equals 1056366640000
+ 13204583 × 200000 yielding 2640916600000
+ 13204583 × 1000000 what gives us 13204583000000
+ 13204583 × 50000000 which equals 660229150000000

= 677229284746686
