On the drawing with a scale of 4:1, the length of a part is 22mm. What is the actual length of the part?
在比例尺是4：1的图纸上，一个零件的长度为22毫米，这个零件的实际长度是多少．
<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<gadget id="calculator">22 / 4</gadget>
<output>11/2 = around 5.5</output>

<result>11/2 = around 5.5</result>