Chickens and rabbits are in the same cage, the number of rabbits is 1/4 of that of chickens, and the total number of chickens and rabbits is 120 feet. How many chickens are there?
鸡兔同笼，兔的只数是鸡的(1/4)，鸡和兔共120只脚．鸡有多少只？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) * 4</gadget>
<output>1</output>

<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">120 / 3</gadget>
<output>40</output>

<result>40</result>