I assume you mean arithmetic long division. There's also algebraic long division.
To help you to do this you could draw up a table for the divisor. Let's suppose the divisor is 237, then you write down all the multiples up to 9*237:
| Multiple of 237 |
|
| 1 |
237 |
| 2 |
474 |
| 3 |
711 |
| 4 |
948 |
| 5 |
1185 |
| 6 |
1422 |
| 7 |
1659 |
| 8 |
1896 |
| 9 |
2133 |
Now suppose the dividend is 19016700.
____80239 rem 57
237 ) 19016700
- 1896 8*237 is the nearest multiple which is lower than 1901, write 8 in the quotient
56 237 won't go into 56 so write 0 in the quotient
567 bring down the next digit in the dividend
- 474 2*237 is the nearest multiple, write 2 in the quotient
930
- 711
2190
- 2133
57