The school builds a cuboid bunker with a length of 6m, a width of 3m and a depth of 1m. It is necessary to pave 10% cement on the four walls and the bottom of the bunker. If 18kg of cement is used per square meter, how much cement is needed in total?
学校新建一个长方体的沙坑，长6m，宽3m，深1m．要在沙坑的四壁及坑底铺一成水泥，如果每平方米要用水泥18㎏，一共需要水泥多少㎏？
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">6 * 1</gadget>
<output>6</output>

<gadget id="calculator">3 * 1</gadget>
<output>3</output>

<gadget id="calculator">6 + 3</gadget>
<output>9</output>

<gadget id="calculator">9 * 2</gadget>
<output>18</output>

<gadget id="calculator">18 + 18</gadget>
<output>36</output>

<gadget id="calculator">36 * 18</gadget>
<output>648</output>

<result>648</result>