 
 <translate> The number of the increase in chicken after 9 years is 150 * 9 = 1350. So the total number of the chicken in Michael's farm will be 550 + 1350 = 1900.
The final answer: 1900. <ibo> Nọmba nke mmụba na ọkụkọ mgbe afọ 9 gachara bụ 150 * 9 = 1350. N'ihi ya, ọnụ ọgụgụ ọkụkọ niile nọ n'ugbo Michael ga-abụ 550+1350=1900. Azịza ya bụ na ọ bụ n'afọ 1900. 