No problem, we've got 6306 and 2506 to multiply
6306 × 2506 = 2506 × (6306)
+ 2506 × 6 producing 15036
+ 2506 × 00 what gives us 0
+ 2506 × 300 resulting in 751800
+ 2506 × 6000 yielding 15036000

= 15802836
