Kindergarten children share biscuits, if each person divides 7 yuan, then there is still a shortage of 3 yuan; if each child divides 5 yuan, there will be 15 yuan left. How many biscuits are there in total?
幼儿园的小朋友分饼干，如果每人分7块，那么还缺3块；如果每人分5块，就余下15块．一共有多少块饼干．
<gadget id="calculator">15 + 3</gadget>
<output>18</output>

<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">7 * 9</gadget>
<output>63</output>

<gadget id="calculator">63 - 3</gadget>
<output>60</output>

<result>60</result>