No problem, we've got 19988750 and 38865625 to multiply
19988750 × 38865625 = 38865625 × (19988750)
+ 38865625 × 0 that is equal 0
+ 38865625 × 50 yielding 1943281250
+ 38865625 × 700 giving us 27205937500
+ 38865625 × 8000 resulting in 310925000000
+ 38865625 × 80000 giving us 3109250000000
+ 38865625 × 900000 producing 34979062500000
+ 38865625 × 9000000 that results in 349790625000000
+ 38865625 × 10000000 producing 388656250000000

= 776875261718750
