No problem, we've got 2157 and 2447 to multiply
2157 × 2447 = 2447 × (2157)
+ 2447 × 7 what gives us 17129
+ 2447 × 50 that is equal 122350
+ 2447 × 100 producing 244700
+ 2447 × 2000 which equals 4894000

= 5278179
