No problem, we've got 5603 and 3260 to multiply
5603 × 3260 = 3260 × (5603)
+ 3260 × 3 yielding 9780
+ 3260 × 00 which equals 0
+ 3260 × 600 yielding 1956000
+ 3260 × 5000 what gives us 16300000

= 18265780
