Tim decides to run a campaign for governor.  He gets the maximum $1200 donation from 500 people, and three times as many people donated half this sum of money to his campaign.  These donations together accounted for 40% of the total money that Tim raised.  How much total money did he raise?
He got 1200*500=$
<gadget id="calculator">1200*500</gadget>
<output>600_000</output>
600,000 from maxed donors.
The smaller donors donated 1200/2=$
<gadget id="calculator">1200/2</gadget>
<output>600</output>
600.
He had 500*3=
<gadget id="calculator">500*3</gadget>
<output>1_500</output>
1500 of these donors.
So they donated 1500*600=$
<gadget id="calculator">1500*600</gadget>
<output>900_000</output>
900,000.
So large donations where worth 900,000+600,000=$
<gadget id="calculator">900000+600000</gadget>
<output>1_500_000</output>
1,500,000.
So he raised 1,500,000/.4=$
<gadget id="calculator">1500000/.4</gadget>
<output>3_750_000</output>
3750000.

<result>3_750_000</result>