12122406 ÷ 673 
We want to figure out the number of times 12122406 can be divided by 673.

Step 1:
673 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 673

On to step 2:
673 goes into 12 0 times with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 673

Step 3:
When dividing 121 by 673, we get 0 with a remainder of 121.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 121 and we're left with 121.
Include the next digit (2) from the dividend after 121, then repeat: 1212 / 673

Advancing to step 4:
673 goes into 1212 1 times with a remainder of 539.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 673 from 1212 and we're left with 539.
Take the next digit (2) from the dividend and append it to 539, then repeat: 5392 / 673

Advancing to step 5:
If we divide 5392 by 673, we get 8 and a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Deduct 5384 from 5392 and we're left with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 673

Moving on to step 6:
The number 673 fits into 84 0 times, leaving a remainder of 84.
The number 0 becomes the next digit in our result. 
Result so far: 180.0
The remainder is 84 after subtracting 0 from 84.
Take the next digit (0) from the dividend and append it to 84, then repeat: 840 / 673

Moving on to step 7:
The number 673 fits into 840 1 times, leaving a remainder of 167.
The number 1 becomes the next digit in our result. 
Result so far: 1801.0
Subtracting 673 from 840 leaves us with 167.
Include the next digit (6) from the dividend after 167, then repeat: 1676 / 673

Moving on to step 8:
1676 divided by 673 is 2 with a remainder of 330.
Write down 2 as next digit of the result. 
Result so far: 18012.0
The remainder is 330 after subtracting 1346 from 1676.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Step 9:
673 can be fit into 3300 4 times, resulting in a remainder of 608.
The next digit of our result is 4. 
Result so far: 18012.4
Subtract 2692 from 3300 to get 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

On to step 10:
The number 673 fits into 6080 9 times, leaving a remainder of 23.
Put 9 as the next digit of the answer. 
Result so far: 18012.49
The remainder is 23 after subtracting 6057 from 6080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 11:
673 goes into 230 0 times with a remainder of 230.
The next digit of our result is 0. 
Result so far: 18012.49
The remainder is 230 after subtracting 0 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 12:
When dividing 2300 by 673, we get 3 with a remainder of 281.
Put 3 as the next digit of the answer. 
Result so far: 18012.4903
Deduct 2019 from 2300 and we're left with 281.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

Let's proceed to step 13:
673 can be fit into 2810 4 times, resulting in a remainder of 118.
Use 4 as the next digit of our solution. 
Result so far: 18012.49034
Subtracting 2692 from 2810 leaves us with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Let's proceed to step 14:
When dividing 1180 by 673, we get 1 with a remainder of 507.
The next digit of our result is 1. 
Result so far: 18012.490341
Subtracting 673 from 1180 leaves us with 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

Going ahead to step 15:
If we divide 5070 by 673, we get 7 and a remainder of 359.
Record the quotient 7 as the next digit in the result. 
Result so far: 18012.4903417
If we subtract 4711 from 5070, we get 359.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3590, and continue the process.

Moving on to step 16:
If we divide 3590 by 673, we get 5 and a remainder of 225.
The number 5 becomes the next digit in our result. 
Result so far: 18012.49034175
Deduct 3365 from 3590 and we're left with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Our division results in 18012.49034175 with a remaining 2.25e-07.