The formula to calculate Zakat is:
\[ \text{Zakat} = \text{Net Worth After Liabilities} \times 2.5\% \]
Zakat is calculated as 2.5% of the net worth after subtracting liabilities. The net worth includes all savings and financial assets that have been held for more than a lunar year.
Let's assume the following:
First, calculate the net worth after liabilities:
\[ \text{Net Worth After Liabilities} = 500,000 - 50,000 = 450,000 \]
Then, calculate Zakat:
\[ \text{Zakat} = 450,000 \times 0.025 = 11,250 \]
Therefore, the Zakat amount is $11,250.