A shopping mall sells a batch of color TV sets, which are priced at a profit of 25%. When 75% of this batch of color TV sets and 36 sets are sold, in addition to recovering all costs, they will also receive 20% of the estimated profit. How many sets of this batch of color TV sets are there?
某商场销售一批彩电，按25%的利润定价，当售出这批彩电的75%又36台时，除收回全部成本外，还获得预计利润的20%，这批彩电共有多少台．
<gadget id="calculator">0.05 - 0.9375</gadget>
<output>-0.8875</output>

<gadget id="calculator">1 + (-0.8875)</gadget>
<output>0.1125</output>

<gadget id="calculator">45 / 0.1125</gadget>
<output>400</output>

<result>400</result>