Xiao Ming originally had 11.42 yuan, but yesterday he bought a pen for 7.5 yuan, and today his mother gave Xiao Ming another 0.35 yuan. How much money does Xiao Ming have now?
小明原来有11.42元，昨天买一枝钢笔用7.5元，今天妈妈又给小明0.35元，现在小明有多少钱？
<gadget id="calculator">11.42 - 7.5</gadget>
<output>3.92</output>

<gadget id="calculator">3.92 + 0.35</gadget>
<output>4.27</output>

<result>4.27</result>