No problem, we've got 8158 and 3100 to multiply
8158 × 3100 = 3100 × (8158)
+ 3100 × 8 which equals 24800
+ 3100 × 50 that equals 155000
+ 3100 × 100 that equals 310000
+ 3100 × 8000 resulting in 24800000

= 25289800
