No problem, we've got 51428447 and 32128408 to multiply
51428447 × 32128408 = 32128408 × (51428447)
+ 32128408 × 7 which equals 224898856
+ 32128408 × 40 that results in 1285136320
+ 32128408 × 400 that equals 12851363200
+ 32128408 × 8000 yielding 257027264000
+ 32128408 × 20000 giving us 642568160000
+ 32128408 × 400000 resulting in 12851363200000
+ 32128408 × 1000000 yielding 32128408000000
+ 32128408 × 50000000 producing 1606420400000000

= 1652314128022376
