On a precision part design drawing with a scale of 10:1, the length of a part is measured to be 5cm. What is the actual length of this part in millimeters?
在一张比例尺是10：1的精密零件设计图上，量得一零件长5cm．这种零件实际长度多少毫米？
<gadget id="calculator">10 / 1</gadget>
<output>10</output>

<gadget id="calculator">10 / 10</gadget>
<output>1</output>

<gadget id="calculator">5 * 1</gadget>
<output>5</output>

<result>5</result>