18,6 0,24 + 3 2/9 15/38
= 4,464 + 1 2/3 15/38
= 4,464 + 17/9 15/38
= 4,464 + (255/6 * 15/38)
= 4,464 + 3825/228
= 4,464 + 16,77
= 4480,77