 
 <translate> He tears 30 * 3 = 90 cards a week. He bought 55 * 18 = 990 cards. So he can tear for 990 / 90 = 11 weeks. <hau> Yana tsage 30 * 3 = 90 katunan a mako. Ya sayi katunan 55 * 18 = 990. Saboda haka zai iya yin 990 / 90 = makonni 11. 