No problem, we've got 6340 and 3987 to multiply
6340 × 3987 = 3987 × (6340)
+ 3987 × 0 which equals 0
+ 3987 × 40 which equals 159480
+ 3987 × 300 that results in 1196100
+ 3987 × 6000 what gives us 23922000

= 25277580
