Xiao Ming goes from home to school, if it is 120 meters per minute, it will be 3 minutes early; if it is 90 meters per minute, it will be 2 minutes late, how many meters is Xiao Ming's home to school?
小明从家到校，如果每分钟120米，则早到3分钟；如果每分钟90米，则迟到2分钟，小明家到学校多少米．
<gadget id="calculator">120 * 3</gadget>
<output>360</output>

<gadget id="calculator">90 * 2</gadget>
<output>180</output>

<gadget id="calculator">360 + 180</gadget>
<output>540</output>

<gadget id="calculator">120 - 90</gadget>
<output>30</output>

<gadget id="calculator">540 / 30</gadget>
<output>18</output>

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

<gadget id="calculator">90 * 20</gadget>
<output>1_800</output>

<result>1_800</result>