Solve the equation: (1/2)y-(1/5)y=18.
解方程：(1/2)y-(1/5)y=18．
<gadget id="calculator">10 / 3</gadget>
<output>10/3 = around 3.333333</output>

<gadget id="calculator">18 * (10/3)</gadget>
<output>60</output>

<result>60</result>