From school to home, it takes 6 hours to walk and 3 hours to ride a bicycle. It is known that cycling is 18 kilometers per hour faster than walking. How many miles is the distance from school to home?
从学校到家，步行要6小时，骑自行车要3小时．已知骑自行车比步行每小时快18千米．学校到家的距离是多少千米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/3) - (1/6)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">18 / (1/6)</gadget>
<output>108</output>

<result>108</result>