It is known that 3x-2=13, then 0.6x+4=how much.
已知3x-2=13，那么0.6x+4=多少．
<gadget id="calculator">13 + 2</gadget>
<output>15</output>

<gadget id="calculator">15 / 3</gadget>
<output>5</output>

<gadget id="calculator">0.6 * 5</gadget>
<output>3</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<result>7</result>