The Cost of Debt

At the time of writing, Husky Energy Inc. had a bond outstanding with approximately $8$ years to maturity $(16$ semiannual

coupons$)$ and a coupon rate of $4\mathrm{.}40\%.$ The bond was currently selling for $$106\mathrm{.}79.$ What is Husky's cost of debt?

To answer this question, we need to solve the bond pricing formula for $R,$ the yield to maturity:

$$106\mathrm{.}79={\displaystyle \underset{t=1}{\overset{16}{}}}\frac{\text{\$}2\mathrm{.}20}{(1+0\mathrm{.}5R{)}^{16}}+\frac{\text{\$}100}{(1+0\mathrm{.}5R{)}^{16}}$

Using a spreadsheet or a financial calculator, we find that $R$ is $3\mathrm{.}42\%.$ Husky's cost of debt is $3\mathrm{.}42\%.$ How to this on a financial calculator?