It is known that 2x-5=7, then how much is 5x+3.6=.
已知2x-5=7，那么5x+3.6=多少．
<gadget id="calculator">7 + 5</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">5 * 6</gadget>
<output>30</output>

<gadget id="calculator">30 + 3.6</gadget>
<output>33.6</output>

<result>33.6</result>