No problem, we've got 3923 and 8505 to multiply
3923 × 8505 = 8505 × (3923)
+ 8505 × 3 what gives us 25515
+ 8505 × 20 that results in 170100
+ 8505 × 900 producing 7654500
+ 8505 × 3000 what gives us 25515000

= 33365115
