No problem, we've got 1658 and 6305 to multiply
1658 × 6305 = 6305 × (1658)
+ 6305 × 8 that is equal 50440
+ 6305 × 50 which equals 315250
+ 6305 × 600 yielding 3783000
+ 6305 × 1000 that is equal 6305000

= 10453690
