Xiao Ming goes from home to school, if he walks 1.5 kilometers more per hour than before, he only needs 4/5 of the original time to walk this distance; if he walks 1.5 kilometers per hour less than before, then he walks this distance How much more time than the original time?
小明从家去学校，如果他每小时比原来多走1.5千米，他走这段路只需原来时间的4/5；如果他每小时比原来少走1.5千米，那么他走这段路的时间就比原来时间多几分之几？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1.5 / (1/4)</gadget>
<output>6</output>

<gadget id="calculator">6 - 1.5</gadget>
<output>4.5</output>

<gadget id="calculator">4.5 / 6</gadget>
<output>0.75</output>

<gadget id="calculator">1 / 0.75</gadget>
<output>1.333333</output>

<gadget id="calculator">1.333333 - 1</gadget>
<output>0.333333</output>

<result>0.333333</result>