(1-35%)x=53.3; 40%x+56=80.
(1-35%)x=53.3；40%x+56=80．
<gadget id="calculator">80 - 56</gadget>
<output>24</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">24 / (2/5)</gadget>
<output>60</output>

<result>60</result>