Xiao Ming walked the whole way from home to school (3/4) and happened to pass by Xiao Fang’s house. The two went to school together. When school was over, they walked from school to home together. At that time, there was still 0.1 kilometers away from Xiaofang's house. How many kilometers is it from Xiao Ming's house to school?
小明从家到学校行了全程的(3/4)正好经过小方家，两人一同上学，放学时两人一同从学校往家走，当走到学校到小明家全程的(1/5)处时，离小方家还有0.1千米．小明家到学校是多少千米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (3/4) - (1/5)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">0.1 / (1/20)</gadget>
<output>2</output>

<result>2</result>