tiles are needed to pave each square meter of floor. To pave a rectangular floor with a length of 15 meters and a width of 5 meters, how many tiles are needed in total?
铺每平方米的地需要9块瓷砖，要铺一块长15米，宽5米的长方形地，一共需要多少块瓷砖？
<gadget id="calculator">15 * 5 * 9</gadget>
<output>675</output>

<result>675</result>