No problem, we've got 1858 and 4399 to multiply
1858 × 4399 = 4399 × (1858)
+ 4399 × 8 producing 35192
+ 4399 × 50 what gives us 219950
+ 4399 × 800 that is equal 3519200
+ 4399 × 1000 yielding 4399000

= 8173342
