Each truck of coal weighs about 19 tons. A certain power plant shipped 51 trucks of coal. How many tons of coal did the factory ship?
每车煤炭大约重19吨，某电厂运来51车煤炭，该厂大约运来煤炭多少吨？
<gadget id="calculator">19 * 51</gadget>
<output>969</output>

<result>969</result>