The Lei Feng group moves bricks for the school. If each person moves 18 yuan, there are 2 yuan left; if each person moves 20 yuan, one student has no bricks to move. How many bricks are there in total.
学雷锋小组为学校搬砖，如果每人搬18块，还剩2块；如果每人搬20块，就有一位同学没砖可搬．共有多少块砖．
<gadget id="calculator">2 + 20</gadget>
<output>22</output>

<gadget id="calculator">20 - 18</gadget>
<output>2</output>

<gadget id="calculator">22 / 2</gadget>
<output>11</output>

<gadget id="calculator">11 - 1</gadget>
<output>10</output>

<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<result>200</result>