Dad hangs a "family portrait" photo frame with a length of 80 cm and a width of 60 cm on the wall. What is the area of the wall covered by the photo frame in square decimeters?
爸爸把一个长80厘米，宽60厘米的"全家福"相框挂在墙上，被相框盖住的墙的面积是多少平方分米？
<gadget id="calculator">80 * 60</gadget>
<output>4_800</output>

<gadget id="calculator">4_800 / 100</gadget>
<output>48</output>

<result>48</result>