A business in March 2017 had a total number of employees of 205 employees and sales of 2 billion. By April 2017 the number of employees decreased to 200 employees and revenue decreased to 1 billion 8. Please tell us during the month. 4 in 2017 businesses are saving or wasting labor and if so, how many people. From the above analysis results, find out the reasonableness or unreasonableness in the use of labor to have an appropriate solution.