No problem, we've got 1258 and 6240 to multiply
1258 × 6240 = 6240 × (1258)
+ 6240 × 8 resulting in 49920
+ 6240 × 50 producing 312000
+ 6240 × 200 resulting in 1248000
+ 6240 × 1000 what gives us 6240000

= 7849920
