Let's divide 1698890 by 143
The aim is to understand the frequency of 143 in 1698890.

Going ahead to step 1:
143 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 143

Going ahead to step 2:
143 can be fit into 16 0 times, resulting in a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Bring next digit (9) of the dividend behind the 16 and repeat the process: 169 / 143

Advancing to step 3:
When dividing 169 by 143, we get 1 with a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 143 from 169 to get 26.
Append the next digit (8) from the dividend to 26 and continue with: 268 / 143

Step 4:
143 can be fit into 268 1 times, resulting in a remainder of 125.
The next digit of our result is 1. 
Result so far: 11.0
If we take 143 away from 268, we end up with 125.
Grab the next digit (8) from the dividend, add it to 125, then carry on: 1258 / 143

On to step 5:
If we divide 1258 by 143, we get 8 and a remainder of 114.
Record the quotient 8 as the next digit in the result. 
Result so far: 118.0
Deduct 1144 from 1258 and we're left with 114.
Bring next digit (9) of the dividend behind the 114 and repeat the process: 1149 / 143

Let's proceed to step 6:
143 goes into 1149 8 times with a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 1188.0
If we take 1144 away from 1149, we end up with 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 143

Advancing to step 7:
143 goes into 50 0 times with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 11880.0
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 8:
143 can be fit into 500 3 times, resulting in a remainder of 71.
The next digit of our result is 3. 
Result so far: 11880.3
If we subtract 429 from 500, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 9:
If we divide 710 by 143, we get 4 and a remainder of 138.
Record the quotient 4 as the next digit in the result. 
Result so far: 11880.34
The remainder is 138 after subtracting 572 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Let's proceed to step 10:
If we divide 1380 by 143, we get 9 and a remainder of 93.
Put 9 as the next digit of the answer. 
Result so far: 11880.349
If we take 1287 away from 1380, we end up with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Let's proceed to step 11:
When dividing 930 by 143, we get 6 with a remainder of 72.
Use 6 as the next digit of our solution. 
Result so far: 11880.3496
If we take 858 away from 930, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 12:
When dividing 720 by 143, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 11880.34965
The remainder is 5 after subtracting 715 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 13:
The number 143 fits into 50 0 times, leaving a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 11880.34965
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 14:
The number 143 fits into 500 3 times, leaving a remainder of 71.
Use 3 as the next digit of our solution. 
Result so far: 11880.3496503
If we take 429 away from 500, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 15:
When dividing 710 by 143, we get 4 with a remainder of 138.
Record the quotient 4 as the next digit in the result. 
Result so far: 11880.34965034
Deduct 572 from 710 and we're left with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

After the division, we end up with 11880.34965034 and a remainder of 1.38e-07.