There are 120 staff members in an organization after streamlining, which is 40 fewer than the original staff. How much has been streamlined?
一个机关精简后有工作人员120人，比原来人员少40人，精简了多少．
<gadget id="calculator">120 + 40</gadget>
<output>160</output>

<gadget id="calculator">40 / 160</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>