Books on Joyo.com have discounted promotions. The discounted price of "Teacher Rumble" that Tongtong wants to buy is 11.10 yuan, and the price of "Singing Cat" is 1.80 yuan more than that of "Teacher Rumble". Tongtong’s excellent stored-value card originally contained 50 yuan, how much money is left after buying these two books?
卓越网图书打折促销，彤彤想买的《轰隆隆老师》折后价是11.10元，《会唱歌的猫》的价格比《轰隆隆老师》的多1.80元．彤彤的卓越储值卡里原来有50元，买这两本书后还剩多少钱？
<gadget id="calculator">11.1 + 1.8 + 11.1</gadget>
<output>24</output>

<gadget id="calculator">50 - 24</gadget>
<output>26</output>

<result>26</result>