Solve the equation: 1.24*4-7x=(3/5).
解方程：1.24*4-7x=(3/5)．
<gadget id="calculator">1.24 * 4</gadget>
<output>4.96</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4.96 - (3/5)</gadget>
<output>4.36</output>

<gadget id="calculator">4.36 / 7</gadget>
<output>0.622857</output>

<result>0.622857</result>