Learning from Lei Feng to do good deeds, Class 51 does 10 things, which is 25% more than Class 52. The number of things done by Class 52 is 1/20 of the total number of projects in the whole school. How many good deeds in the whole school?
学雷锋做好事，五一班做10件，比五二班多做25%，五二班做的件数是全校总件数的(1/20)，全校共做好事多少件？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">10 / (5/4) / (1/20)</gadget>
<output>160</output>

<result>160</result>