Please help on number 6

What is the result of the following division?

The average length of a king cobra is 3.7 m. the record length is 1.88 m longer than the average. how long is the record holder?

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .