Last week the IRS received 5168 tax reports. On Monday and Tuesday they received a total of 1907 reports. On Thursday and Friday they received a total of 2136 reports. How many reports did they receive on Wednesday?
Mon/Tues = 1907.
Thur/Fri = 2136.
Mon, Tues, Thur, Fri = 1907 + 2136 = 
<gadget id="calculator">1907+2136</gadget>
<output>4_043</output>
4043
5168 - 4043 = 
<gadget id="calculator">5168-4043</gadget>
<output>1_125</output>
1125 reports.
The IRS received 1125 tax reports on Wednesday of last week.

<result>1_125</result>