Final answer:
To divide 1.23 by 9, you can use long division. The quotient, rounded to three decimal places, is 0.136.
Step-by-step explanation:
To divide 1.23 by 9, we can use long division:
0.136 → Multiply 9 by 0.1, which gives 0.9. Subtract 0.9 from 1.23 to get 0.33.
0.122 → Bring down the next digit, which is 2. Divide 9 by 2 to get 4.5. Write 4 above the division line.
0.008 → Multiply 2 by 4.5, which gives 9. Subtract 9 from 20 to get 11. Bring down the next digit, which is 3. Divide 9 by 3 to get 3. Write 3 above the division line.
0.002 → Multiply 3 by 9, which gives 27. Subtract 27 from 33 to get 6. Bring down the next digit, which is 6. Divide 9 by 6 to get 1.5. Write 1 above the division line.
0.0002 → Multiply 6 by 1.5, which gives 9. Subtract 9 from 6 to get -3.