We look at the division of 33974634 by 990 
The aim is to understand the frequency of 990 in 33974634.

Moving on to step 1:
If we divide 3 by 990, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 990

Going ahead to step 2:
If we divide 33 by 990, we get 0 and a remainder of 33.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 33 leaves us with 33.
Append the next digit (9) from the dividend to 33 and continue with: 339 / 990

Moving on to step 3:
990 goes into 339 0 times with a remainder of 339.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 339 to get 339.
Grab the next digit (7) from the dividend, add it to 339, then carry on: 3397 / 990

Going ahead to step 4:
990 goes into 3397 3 times with a remainder of 427.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 2970 from 3397, we get 427.
Fetch the next digit (4) from the dividend, attach it to 427 and continue: 4274 / 990

Advancing to step 5:
990 goes into 4274 4 times with a remainder of 314.
The number 4 becomes the next digit in our result. 
Result so far: 34.0
Subtract 3960 from 4274 to get 314.
Append the next digit (6) from the dividend to 314 and continue with: 3146 / 990

Step 6:
If we divide 3146 by 990, we get 3 and a remainder of 176.
The next digit of our result is 3. 
Result so far: 343.0
If we subtract 2970 from 3146, we get 176.
Grab the next digit (3) from the dividend, add it to 176, then carry on: 1763 / 990

Advancing to step 7:
If we divide 1763 by 990, we get 1 and a remainder of 773.
Put 1 as the next digit of the answer. 
Result so far: 3431.0
Deduct 990 from 1763 and we're left with 773.
Fetch the next digit (4) from the dividend, attach it to 773 and continue: 7734 / 990

Step 8:
When dividing 7734 by 990, we get 7 with a remainder of 804.
Use 7 as the next digit of our solution. 
Result so far: 34317.0
If we take 6930 away from 7734, we end up with 804.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8040, and continue the process.

On to step 9:
If we divide 8040 by 990, we get 8 and a remainder of 120.
Record the quotient 8 as the next digit in the result. 
Result so far: 34317.8
Subtracting 7920 from 8040 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 10:
990 can be fit into 1200 1 times, resulting in a remainder of 210.
Use 1 as the next digit of our solution. 
Result so far: 34317.81
If we subtract 990 from 1200, we get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

On to step 11:
When dividing 2100 by 990, we get 2 with a remainder of 120.
Record the quotient 2 as the next digit in the result. 
Result so far: 34317.812
Deduct 1980 from 2100 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 12:
990 goes into 1200 1 times with a remainder of 210.
Write down 1 as next digit of the result. 
Result so far: 34317.8121
The remainder is 210 after subtracting 990 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Let's proceed to step 13:
990 can be fit into 2100 2 times, resulting in a remainder of 120.
Record the quotient 2 as the next digit in the result. 
Result so far: 34317.81212
Subtracting 1980 from 2100 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 14:
When dividing 1200 by 990, we get 1 with a remainder of 210.
Use 1 as the next digit of our solution. 
Result so far: 34317.812121
Subtracting 990 from 1200 leaves us with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 15:
990 can be fit into 2100 2 times, resulting in a remainder of 120.
Use 2 as the next digit of our solution. 
Result so far: 34317.8121212
Subtract 1980 from 2100 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 16:
990 goes into 1200 1 times with a remainder of 210.
Record the quotient 1 as the next digit in the result. 
Result so far: 34317.81212121
If we subtract 990 from 1200, we get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

The final result is 34317.81212121 with a remainder of 2.1e-07.