a = 809
for i in range(10,100):
b = i * a
if b >= 1000 and b <= 10000 and 8 * i < 100 and 9 * i >= 100:
print(b,' = 800 * ', i, ' + 9 * ', i)
for i in range(10,100):
if 8*i>99 or 9*i<100:
continue
if 809*i==800*i+9*i:
print(i)
break
