75346121 divided by 140 
The aim is to understand the frequency of 140 in 75346121.

On to step 1:
140 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 140

Moving on to step 2:
140 goes into 75 0 times with a remainder of 75.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 75 and we're left with 75.
Fetch the next digit (3) from the dividend, attach it to 75 and continue: 753 / 140

Let's proceed to step 3:
The number 140 fits into 753 5 times, leaving a remainder of 53.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we take 700 away from 753, we end up with 53.
Fetch the next digit (4) from the dividend, attach it to 53 and continue: 534 / 140

On to step 4:
534 divided by 140 is 3 with a remainder of 114.
The next digit of our result is 3. 
Result so far: 53.0
Subtracting 420 from 534 leaves us with 114.
Bring next digit (6) of the dividend behind the 114 and repeat the process: 1146 / 140

On to step 5:
When dividing 1146 by 140, we get 8 with a remainder of 26.
Write down 8 as next digit of the result. 
Result so far: 538.0
If we subtract 1120 from 1146, we get 26.
Bring next digit (1) of the dividend behind the 26 and repeat the process: 261 / 140

Advancing to step 6:
If we divide 261 by 140, we get 1 and a remainder of 121.
Record the quotient 1 as the next digit in the result. 
Result so far: 5381.0
If we take 140 away from 261, we end up with 121.
Include the next digit (2) from the dividend after 121, then repeat: 1212 / 140

Step 7:
If we divide 1212 by 140, we get 8 and a remainder of 92.
The next digit of our result is 8. 
Result so far: 53818.0
If we take 1120 away from 1212, we end up with 92.
Append the next digit (1) from the dividend to 92 and continue with: 921 / 140

On to step 8:
140 can be fit into 921 6 times, resulting in a remainder of 81.
Write down 6 as next digit of the result. 
Result so far: 538186.0
If we subtract 840 from 921, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Moving on to step 9:
When dividing 810 by 140, we get 5 with a remainder of 110.
Record the quotient 5 as the next digit in the result. 
Result so far: 538186.5
Subtracting 700 from 810 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 10:
1100 divided by 140 is 7 with a remainder of 120.
The number 7 becomes the next digit in our result. 
Result so far: 538186.57
If we subtract 980 from 1100, we 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.

On to step 11:
140 can be fit into 1200 8 times, resulting in a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 538186.578
Subtract 1120 from 1200 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 12:
The number 140 fits into 800 5 times, leaving a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 538186.5785
Subtract 700 from 800 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 13:
140 goes into 1000 7 times with a remainder of 20.
Write down 7 as next digit of the result. 
Result so far: 538186.57857
Deduct 980 from 1000 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 14:
200 divided by 140 is 1 with a remainder of 60.
Record the quotient 1 as the next digit in the result. 
Result so far: 538186.578571
Subtracting 140 from 200 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 15:
If we divide 600 by 140, we get 4 and a remainder of 40.
The next digit of our result is 4. 
Result so far: 538186.5785714
If we take 560 away from 600, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 16:
If we divide 400 by 140, we get 2 and a remainder of 120.
Write down 2 as next digit of the result. 
Result so far: 538186.57857142
Subtracting 280 from 400 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.

After the division, we end up with 538186.57857142 and a remainder of 1.2e-07.