No problem, we've got 3907 and 1784 to multiply
3907 × 1784 = 1784 × (3907)
+ 1784 × 7 giving us 12488
+ 1784 × 00 giving us 0
+ 1784 × 900 yielding 1605600
+ 1784 × 3000 that is equal 5352000

= 6970088
