George Kyparisis owns a company that manufactures sailboats. Actual demand for​ George's sailboats during each of the past four seasons was as​ follows: Year Season 1 2 3 4 Winter 1 comma 440 1 comma 240 1 comma 000 920 Spring 1 comma 500 1 comma 440 1 comma 600 1 comma 500 Summer 1 comma 040 2 comma 140 2 comma 000 1 comma 900 Fall 600 770 690 520 George has forecasted that annual demand for his sailboats in year 5 will equal 6 comma 500 sailboats. Based on the given data and using the multiplicative seasonal​ model, the demand level for​ George's sailboats in the spring of year 5 will be nothing sailboats ​(enter a whole ​number).