No problem, we've got 3145 and 3240 to multiply
3145 × 3240 = 3240 × (3145)
+ 3240 × 5 producing 16200
+ 3240 × 40 producing 129600
+ 3240 × 100 that is equal 324000
+ 3240 × 3000 yielding 9720000

= 10189800
