Given a specific line of text, you need to parse it and perform data operations to fit the requirement.
A line of text with the following syntax:
e1,e2,e3,e4
where e1, ... , e4 represented 4 elements from given text.
A line of text with the following operations:
e1 multiply e2 plus e4 multiply e3
Note that the details of the operations are:
You don't need to consider the decimals for multiplication.
That is it will be fine if the answer is 12.6hellohello while yours is 12.6000001hellohello.