(18/35)/0.6*(2/3)(4/9)*(15/16)/(5/6)(2-0.6)/(7/15).
(18/35)/0.6*(2/3)(4/9)*(15/16)/(5/6)(2-0.6)/(7/15)．
<gadget id="calculator">15 / 7</gadget>
<output>15/7 = around 2.142857</output>

<gadget id="calculator">1.4 * (15/7)</gadget>
<output>3</output>

<result>3</result>