A company has 200 employees.  60% of the employees drive to work.  Of the employees who don't drive to work, half take public transportation. How many more employees drive to work than take public transportation?
Drive to work:200(.60)=
<gadget id="calculator">200*.60</gadget>
<output>120</output>
120.
Don't Drive to work:200-120=
<gadget id="calculator">200-120</gadget>
<output>80</output>
80.
Public Transportation:80(.50)=40 employees
80-40=
<gadget id="calculator">80-40</gadget>
<output>40</output>
40 employees.

<result>40</result>