The school bought 5 boxes of pencils, each box contains 20 pieces, and each box contains 50 pencils. How many pencils did the school buy in total?
学校买来5箱铅笔，每箱有20合，每合有50支铅笔，学校一共买来多少支铅笔？
<gadget id="calculator">50 * 20 * 5</gadget>
<output>5_000</output>

<result>5_000</result>