Dad gives Xiao Ming 15 yuan every month. By the end of the year, he has used up 104 yuan. How much money does he have left?
爸爸每个月给小明15元，到年底时，他用掉了104元，他还剩多少钱？
<gadget id="calculator">12 * 15</gadget>
<output>180</output>

<gadget id="calculator">180 - 104</gadget>
<output>76</output>

<result>76</result>