Obviously there are 42 stamps, but Fangfang has 14 less stamps than Mingming. How many stamps do they have in total?
明明有42张邮票，芳芳的邮票比明明少14张．他们一共有多少张邮票？
<gadget id="calculator">42 - 14</gadget>
<output>28</output>

<gadget id="calculator">28 + 42</gadget>
<output>70</output>

<result>70</result>