The school bought 45 boxes of colored chalk and 155 boxes of white chalk, with 40 sticks in each box. How many sticks of chalk were bought in total? (answer in two ways)
学校买来45盒彩色粉笔和155盒白粉笔，每盒40枝，一共买来多少枝粉笔？(用两种方法解答)
<gadget id="calculator">45 * 40</gadget>
<output>1_800</output>

<gadget id="calculator">155 * 40</gadget>
<output>6_200</output>

<gadget id="calculator">1_800 + 6_200</gadget>
<output>8_000</output>

<result>8_000</result>