No problem, we've got 2157 and 8327 to multiply
2157 × 8327 = 8327 × (2157)
+ 8327 × 7 what gives us 58289
+ 8327 × 50 that equals 416350
+ 8327 × 100 what gives us 832700
+ 8327 × 2000 giving us 16654000

= 17961339
