3.17+7.48-2.38+0.53-3.48-1.62+5.3.
3.17+7.48-2.38+0.53-3.48-1.62+5.3．
<gadget id="calculator">7.48 - 2.38</gadget>
<output>5.1</output>

<gadget id="calculator">0.53 - 3.48 - 1.62</gadget>
<output>-4.57</output>

<gadget id="calculator">3.17 + 5.1 + (-4.57) + 5.3</gadget>
<output>9</output>

<result>9</result>