Am I wrong?

Hello Everyone!

I can't seem to find the right answer to the following case question:

World Cinema is going to make an investment of $255 000 to open 3 new cinema rooms. 30% of the total investment will go to marketing costs, which equals three-fourths of the construction costs. The remaining amount goes to operation costs of the 3 cinema rooms in 1 year. How much does it cost to operate 1 cinema room in a month?

After calculation, I find Marketing Costs (76 500$), Construction Costs (102 000$) and Total Operation Costs for 3 cinema rooms in a year (76 500$) so Operation Costs for 1 cinema room in a month (2 125$).

Does someone know why is the solution supposed to be 2 550$?

Thanks in advance for your insights!