George Kyparisis owns a company that manufactures sailboats. Actual demand for George's sailboats during each of the past four seasons was as follows:

Season 1 2 3 4

Winter 1,440 1,280 1,040 900

Spring 1,520 1,400 1,600 1,540

Summer 1,020 2,100 2,000 2,000

Fall 640 810 650 520

George has forecasted that annual demand for his sailboats in year 5 will equal 6500 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 _______ sailboats? (enter a whole number).