Ontarians Pay a Health Tax Premium Based on Their Yearly $\$ 25,000$

Short Answer

Ontarians pay a health tax premium based on their yearly taxable income. If taxable incomes up to $\$ 25,000$ pay a rate of $6.41 \%$ for the health tax premium, with no tax payable on the first $\$ 20,000$ , how much is the health tax premium for a taxable income of $\$ 23,617$ ?