There are 10 kinds of dishes in a buffet, and each person has 4 plates to choose from. Each plate can only put 1 kind of dish, but you can choose dishes repeatedly. May I ask: How many choices are there in total?
一次自助餐，共有10种菜，每个人都有4个盘子可以选菜，每个盘子只能放1种菜，但可以重复选菜，请问：共有多少种选菜方案？
<gadget id="calculator">10 * 9</gadget>
<output>90</output>

<gadget id="calculator">9 / 2</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">10 * (9/2)</gadget>
<output>45</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">9 * 4</gadget>
<output>36</output>

<gadget id="calculator">10 * 36</gadget>
<output>360</output>

<gadget id="calculator">10 + 90 + 45 + 360 + 210</gadget>
<output>715</output>

<result>715</result>