A school dug a cuboid bunker with a length of 5 meters, a width of 2.2 meters and a depth of 0.4 meters. How many tons of sand are needed to fill the bunker? (if sand weighs 1.5 tons per cubic meter)
某学校挖了一个长5米、宽2.2米、深0.4米的长方体沙坑，需要多少吨沙子才能填满沙坑？(如果每立方米沙重1.5吨)
<gadget id="calculator">5 * 2.2 * 0.4 * 1.5</gadget>
<output>6.6</output>

<result>6.6</result>