Long division (relevant for 6Q 19.1-19.3)

To solve $138÷6$ using long division, we can represent the process in a structured format:

Here's how it works step-by-step:

1. Divide: 6 goes into 13 two times. Write 2 above the division bar.
2. Multiply: $2\times 6=12$. Write 12 below 13.
3. Subtract: $13-12=1$. Write the remainder 1 below.
4. Bring down: Bring down the next digit, 8, to make it 18.
5. Divide: 6 goes into 18 three times. Write 3 above the division bar.
6. Multiply: $3\times 6=18$. Write 18 below 18.
7. Subtract: $18-18=0$. Write the remainder 0 below.

The quotient is 23, with no remainder.