1. The problem is unclear as it only lists numbers: 1.3, 1.4, 1.5, 1.6, 1.7. 2. Assuming you want to find the sum of these numbers, we use the formula for the sum of a list of numbers: $$\text{Sum} = a_1 + a_2 + a_3 + \dots + a_n$$ 3. Substitute the given numbers: $$1.3 + 1.4 + 1.5 + 1.6 + 1.7$$ 4. Add the numbers step-by-step: $$1.3 + 1.4 = 2.7$$ $$2.7 + 1.5 = 4.2$$ $$4.2 + 1.6 = 5.8$$ $$5.8 + 1.7 = 7.5$$ 5. Therefore, the sum of the numbers is $$7.5$$. This is a simple addition problem where you add each number one by one to get the total.