No problem, we've got 6354 and 7899 to multiply
6354 × 7899 = 7899 × (6354)
+ 7899 × 4 that equals 31596
+ 7899 × 50 giving us 394950
+ 7899 × 300 what gives us 2369700
+ 7899 × 6000 giving us 47394000

= 50190246
