A team of 4 painters worked on a mansion for 3/8ths of a day every day for 3 weeks. How many hours of work did each painter put in?
There are 24 hours in a day so 3/8ths of a day is (3/8)*24 = 
<gadget id="calculator">3/8*24</gadget>
<output>9</output>
9 hours.
One week has 7 days so 3 weeks have 7*3 = 
<gadget id="calculator">7*3</gadget>
<output>21</output>
21 days.
Each painter put in 9*21 = 
<gadget id="calculator">9*21</gadget>
<output>189</output>
189 hours of work.

<result>189</result>