Xiao Ming and his three good friends each have 58 books, and in the hand-in-hand activity, they gave 84 books to the classmates in the paired schools. How many books do they have left in total?
小明和他的3个好朋友每人都有58本书，在手拉手活动中，送给结对学校的同学84本．他们一共还剩下多少本图书？
<gadget id="calculator">4 * 58</gadget>
<output>232</output>

<gadget id="calculator">232 - 84</gadget>
<output>148</output>

<result>148</result>