Solve the equation: (x+15)*(2/5)=60.
解方程：(x+15)*(2/5)=60．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">15 * (2/5)</gadget>
<output>6</output>

<gadget id="calculator">60 - 6</gadget>
<output>54</output>

<gadget id="calculator">54 / (2/5)</gadget>
<output>135</output>

<result>135</result>