No problem, we've got 8115 and 3903 to multiply
8115 × 3903 = 3903 × (8115)
+ 3903 × 5 that results in 19515
+ 3903 × 10 what gives us 39030
+ 3903 × 100 giving us 390300
+ 3903 × 8000 which equals 31224000

= 31672845
