The current price of a mobile phone is 770 yuan, which is lower than the original price (4/15). What was the original selling price?
一种手机现在的售价是770元，比原来降价了(4/15)．原来售价是多少？
<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">1 - (4/15)</gadget>
<output>11/15 = around 0.733333</output>

<gadget id="calculator">770 / (11/15)</gadget>
<output>1_050</output>

<result>1_050</result>