The school installs classroom glass, each piece of glass is 45 cm long and 30 cm wide. What is the area of each glass in square centimeters?
学校安装教室的玻璃，每块玻璃长45厘米，宽30厘米．每块玻璃的面积是多少平方分米．
<gadget id="calculator">45 * 30</gadget>
<output>1_350</output>

<gadget id="calculator">1_350 / 100</gadget>
<output>27/2 = around 13.5</output>

<result>27/2 = around 13.5</result>