(17/77)*10+(17/77)*9+(17/77)*8+…+(17/77)*2+(17/77)═How much.
(17/77)*10+(17/77)*9+(17/77)*8+…+(17/77)*2+(17/77)═多少．
<gadget id="calculator">17 / 77</gadget>
<output>17/77 = around 0.220779</output>

<gadget id="calculator">(17/77) * 55</gadget>
<output>85/7 = around 12.142857</output>

<result>85/7 = around 12.142857</result>