No problem, we've got 3826 and 5316 to multiply
3826 × 5316 = 5316 × (3826)
+ 5316 × 6 what gives us 31896
+ 5316 × 20 that is equal 106320
+ 5316 × 800 that is equal 4252800
+ 5316 × 3000 yielding 15948000

= 20339016
