 
 <translate> Give the step-by-step reasoning process and then the final answer. Next year, there will be twice as many people going to the fair as are going this year, and the number of people who went to the fair last year was 200 less than those going next year. If the number of people going to the fair this year is 600, calculate the number of people at the fair in the three years. <ibo> Kwuo otú e si atụgharị uche n'isiokwu ahụ, kọwaa nke ọ bụla n'ime ha, ma kwuo ihe bụ azịza ya. N'afọ na-abịa, ndị ga-aga ahịa ahụ ga-eji okpukpu abụọ karịa ndị ga-aga n'afọ a, ọnụọgụgụ ndị gara ahịa ahụ n'afọ gara aga erughị narị abụọ karịa ndị ga-aga n'afọ na-abịa. Ọ bụrụ na ọnụọgụgụ ndị mmadụ na-aga n'emume ahụ n'afọ a bụ 600, gbakọọ ọnụọgụgụ ndị mmadụ n'emume ahụ n'ime afọ atọ. 