What is the piecewise function for the following college algebra problem:
Job pays $1850/month + $250/month (bonus). The bonus is placed in a savings account (no interest). After 30 months, I receive in a lump sum, money in the account. I receive no bonus if I quit before 30 months. Then, beginning with 31st month, the $250 bonus starts again each month for remaining time I work for the company. At the end of 60 months,I receive in lump sum, the remaining bonus money. If I quit before 60 months I will receive no bonus money that accumulated with 31st month.

Question

What is the piecewise function for the following college algebra problem: 
Job pays $1850/month + $250/month (bonus). The bonus is placed in a savings account (no interest). After 30 months, I receive in a lump sum, money in the account. I receive no bonus if I quit before 30 months. Then, beginning with 31st month, the $250 bonus starts again each month for remaining time I work for the company. At the end of 60 months,I receive in lump sum, the remaining bonus money. If I quit before 60 months I will receive no bonus money that accumulated with 31st month.