tolong di jawab pakai caranya ya kak. makasih

1. 15/2 : 1/4 = 15/2 x 4/1 = 60/2 = 30 bungkus plastik
2. 4200m : 50m=84 bendera
3. 17/2 : 25/100 = 17/2 x 100/25 = 1700/50=34 kabel
4. 65/10 : 1/4 = 65/10 x 4/1 = 260/10 = 26 kodi
520 lembar
5. 7/2 : 1/4 = 7/2 x 4/1 = 28/2 = 14 pensil