On a commodity exchange when booking trades with provision for stop-losses, a trader can make a profit of $\displaystyle \text{Rs } 20,000$ or incur a loss of $\displaystyle \text{Rs } 20,000$. The probabilities of making profit and incurring loss, from the past experience, are known to be $\displaystyle 0.75$ and $\displaystyle 0.25$ respectively. The expected profit to be made by trader should be