Idon't get this at all > _<

3. andy runs 436.8 meters in 62.08 seconds.

(3a). if andy runs at a constant speed, how far does he run in one second? give your answer to the nearest tenth of a second.

(3b). use place value, multiplication with powers of 10, or equivalent fractions to explain what is happening mathematically to decimal points in the divisor and dividend before dividing.

(3c). in the following expression, place a decimal point in the divisor and the dividend to create a new problem with the same answer as in (3a). then, explain how you know the answer will be the same.

(experession): 4 3 6 8 ÷ 6 2 0 8