The school shipped 200 saplings, the teacher planted 20, and the rest were allocated to grades A, B, and C according to 5:4:3. How many saplings did C get?
学校运来200棵树苗，老师栽种了20棵，余下的按5：4：3分配给甲、乙、丙三个年级，丙分到多少棵？
<gadget id="calculator">200 - 20</gadget>
<output>180</output>

<gadget id="calculator">5 + 4 + 3</gadget>
<output>12</output>

<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">180 * (1/4)</gadget>
<output>45</output>

<result>45</result>