The Dongyuan farm has 3,250 chickens, which is 50 more than the four times the number of chickens raised in the Xiyuan farm. How many chickens are there in the Xiyuan farm? (Solution by equation).
东苑养殖场养了3250只鸡，比西苑养殖场养鸡只数的4倍还多50只，西苑养殖场养了多少只鸡呢？(用方程解)．
<gadget id="calculator">3_250 - 50</gadget>
<output>3_200</output>

<gadget id="calculator">3_200 / 4</gadget>
<output>800</output>

<result>800</result>