No problem, we've got 6398 and 2513 to multiply
6398 × 2513 = 2513 × (6398)
+ 2513 × 8 giving us 20104
+ 2513 × 90 what gives us 226170
+ 2513 × 300 giving us 753900
+ 2513 × 6000 that equals 15078000

= 16078174
