No problem, we've got 1525 and 4163 to multiply
1525 × 4163 = 4163 × (1525)
+ 4163 × 5 that equals 20815
+ 4163 × 20 resulting in 83260
+ 4163 × 500 that results in 2081500
+ 4163 × 1000 that results in 4163000

= 6348575
