A washing machine is now priced at 840 yuan each, which is (1/9) lower than the original price. How much is it each?
一种洗衣机现在每台售价840元，比原来降价(1/9)．原来每台多少元？
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 - (1/9)</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">840 / (8/9)</gadget>
<output>945</output>

<result>945</result>