After the price reduction (1/7) of a backgammon VCD, each set is now priced at 780 yuan, how much has it been reduced?
一台步步高VCD降价(1/7)后，现在每台售价780元，降低了多少元？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 - (1/7)</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">780 / (6/7)</gadget>
<output>910</output>

<gadget id="calculator">910 * (1/7)</gadget>
<output>130</output>

<result>130</result>