y-4-(3/4)y=18．
y-4-(3/4)y=18．
<gadget id="calculator">18 + 4</gadget>
<output>22</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">22 / (1/4)</gadget>
<output>88</output>

<result>88</result>