Code and design has to be in Visual Basic !!

The Mari pot Carpet Store has asked you to write a computer program to calculate the amount a customer should be changed. The president of the company has given you the following information to help in writing the program. The carpet charge is equal to the number of square yards purchased limes the labor cost per square yard. The labor cost is equal to the number of square yards purchased times the cost per square yard. A fixed fee for floor preparation is added to some customers' bills. Large volume customers are given a percentage discount but the discount applies only to the carpel charge, not the labor costs. All customers are charged 4 percent sales tax on the carpet: there is no sales tax on the labor cost. The following is sample data for this problem. The data for customer 1 were used to produce the following sample output