Six-way split of a bill plus 20 percent tip

Six friends share a restaurant bill of $132.67 and add a $20\%$ tip. If they split the total evenly, how much does each person pay?

About $26.53. The total with tip is $1.2\times132.67=159.204$ dollars, and dividing by $6$ gives $26.534$ dollars each. A quick mental route: $132.67/6\approx22.11$, then multiply by $1.2$.