The ratio of the number of three good students to the number of safflower teenagers is 7:4, there are 36 safflower teenagers, how many three good students are there.
三好学生与红花少年人数的比是7：4，红花少年有36人，三好学生有多少人．
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<gadget id="calculator">9 * 7</gadget>
<output>63</output>

<result>63</result>