To transport a batch of cement to the construction site, 6 vehicles with a load of 4.5 tons were used, and the transportation was completed 7 times. How many tons is this batch of cement?
运送一批水泥到工地，用载重4.5吨的汽车6辆，运了7次正好运完．这批水泥有多少吨？
<gadget id="calculator">4.5 * 6 * 7</gadget>
<output>189</output>

<result>189</result>