1. The problem asks to find the sum of all given durations in hours.\n2. List all numbers: 0.13, 0.08, 3.88, 0.17, 0.08, 1.13, 0.15, 1.00, 0.30, 0.10, 0.27, 1.00, 8.75, 3.92, 0.08, 2.63, 1.70, 0.70, 3.90, 1.00, 4.17, 0.93, 0.10, 1.80, 0.90, 0.45, 1.00, 1.00, 0.50, 1.00, 1.43, 2.00, 0.38, 0.50, 0.55, 0.57, 18.50, 0.53, 0.50, 0.05, 0.47, 0.13, 0.50, 0.25, 0.67, 1.33, 1.12, 0.38, 1.50, 1.33, 6.40, 0.50, 0.50, 5.20, 0.28, 0.07, 1.40, 0.40, 0.45, 0.05, 0.58, 0.27, 1.05, 0.58, 0.70, 4.70, 0.40, 0.47, 0.28, 1.00, 0.08, 0.98, 0.55, 4.17, 3.67, 7.00, 0.55, 0.50, 8.47, 9.67, 1.03, 1.20, 0.17, 1.82, 0.42, 0.95, 0.17, 0.37, 0.20, 0.12, 0.42, 0.42, 0.10, 0.35, 0.25, 0.08, 0.23, 0.15, 0.45, 0.18, 0.17, 0.27, 0.27, 0.97, 0.73, 0.20, 0.43, 1.13, 9.17, 1.45, 2.10, 2.48, 0.95, 0.27, 0.25, 1.27, 0.58, 0.08, 0.12, 7.12, 0.50, 0.50\n3. Calculate the sum: \n$$S = 0.13+0.08+3.88+0.17+0.08+1.13+0.15+1.00+0.30+0.10+0.27+1.00+8.75+3.92+0.08+2.63+1.70+0.70+3.90+1.00+4.17+0.93+0.10+1.80+0.90+0.45+1.00+1.00+0.50+1.00+1.43+2.00+0.38+0.50+0.55+0.57+18.50+0.53+0.50+0.05+0.47+0.13+0.50+0.25+0.67+1.33+1.12+0.38+1.50+1.33+6.40+0.50+0.50+5.20+0.28+0.07+1.40+0.40+0.45+0.05+0.58+0.27+1.05+0.58+0.70+4.70+0.40+0.47+0.28+1.00+0.08+0.98+0.55+4.17+3.67+7.00+0.55+0.50+8.47+9.67+1.03+1.20+0.17+1.82+0.42+0.95+0.17+0.37+0.20+0.12+0.42+0.42+0.10+0.35+0.25+0.08+0.23+0.15+0.45+0.18+0.17+0.27+0.27+0.97+0.73+0.20+0.43+1.13+9.17+1.45+2.10+2.48+0.95+0.27+0.25+1.27+0.58+0.08+0.12+7.12+0.50+0.50$$\nCalculated sum is $115.39$.\n4. So, the total duration of all stops combined is $115.39$ hours.