15.39*4.62+5.38*15.39.
15.39*4.62+5.38*15.39．
<gadget id="calculator">15.39 * 4.62</gadget>
<output>71.1018</output>

<gadget id="calculator">5.38 * 15.39</gadget>
<output>82.7982</output>

<gadget id="calculator">71.1018 + 82.7982</gadget>
<output>153.9</output>

<result>153.9</result>