Three digit divisors aren't that difficult to work with, they just take some time to get used to. Here's another example:
13 r255 1. Divide (450/327=1) +-------- 2. Multiply (327 x 1 = 327) 327 | 4506 3. Subtract (450-327=123) 327 4. Bring down the 6 ------- 5. Divide (1236/327=3) 1236 6. Multiply (327x3=981) 981 7. Subtract (1236-981=255) ------- 8. Remainder 255 255