0.4+5y=4.4, what is y
0.4+5y=4.4，y是多少
<gadget id="calculator">4.4 - 0.4</gadget>
<output>4</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>