Peace be upon you and God's mercy,
To calculate the average price accurately, you can use the following equation:
(Total purchase cost ÷ Total number of units).
As for strengthening, it depends on your strategy and investment goals. If you see that $PEPE has a promising future based on your analysis, you can strengthen your position. If you are looking for diversification, it is good to study other promising currencies. The most important thing is to adhere to risk management."