A and B have a total deposit of 1,550 yuan. A takes out (1/5) of his own deposit, and B deposits another 250 yuan. At this time, the deposits of the two are equal. How much did B deposit?
甲乙两人共有存款1550元，甲取出自己存款的(1/5)，乙又存入250元，这时两人的存款数量相等．原来乙存款多少元？
<gadget id="calculator">1_550 + 250</gadget>
<output>1_800</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">1_800 / (9/5)</gadget>
<output>1_000</output>

<gadget id="calculator">1_550 - 1_000</gadget>
<output>550</output>

<result>550</result>