Xiao Wang walked 180m in 3 minutes. At this speed, it would take him 7 minutes to walk from home to school. How many meters is Xiao Wang's house from the school? (Please use the proportional method to solve)
小王3分钟走了180m，照这样的速度，他从家走到学校要用7分钟．小王家距学校有多少米？(请用比例方法解)
<gadget id="calculator">180 / 3</gadget>
<output>60</output>

<gadget id="calculator">60 * 7</gadget>
<output>420</output>

<result>420</result>