143980 divided by 61 
The aim is to understand the frequency of 61 in 143980.

Advancing to step 1:
The number 61 fits into 1 0 times, leaving 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.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 61

Moving on to step 2:
When dividing 14 by 61, we get 0 with a remainder of 14.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 14 to get 14.
Grab the next digit (3) from the dividend, add it to 14, then carry on: 143 / 61

On to step 3:
The number 61 fits into 143 2 times, leaving a remainder of 21.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 122 from 143 to get 21.
Take the next digit (9) from the dividend and append it to 21, then repeat: 219 / 61

Moving on to step 4:
The number 61 fits into 219 3 times, leaving a remainder of 36.
Use 3 as the next digit of our solution. 
Result so far: 23.0
Subtracting 183 from 219 leaves us with 36.
Grab the next digit (8) from the dividend, add it to 36, then carry on: 368 / 61

Let's proceed to step 5:
If we divide 368 by 61, we get 6 and a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 236.0
Subtracting 366 from 368 leaves us with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 61

Let's proceed to step 6:
61 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 2360.0
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 7:
61 can be fit into 200 3 times, resulting in a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 2360.3
Subtracting 183 from 200 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 8:
If we divide 170 by 61, we get 2 and a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 2360.32
The remainder is 48 after subtracting 122 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 9:
If we divide 480 by 61, we get 7 and a remainder of 53.
Use 7 as the next digit of our solution. 
Result so far: 2360.327
The remainder is 53 after subtracting 427 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 10:
When dividing 530 by 61, we get 8 with a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 2360.3278
If we subtract 488 from 530, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 11:
61 goes into 420 6 times with a remainder of 54.
Write down 6 as next digit of the result. 
Result so far: 2360.32786
If we take 366 away from 420, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 12:
The number 61 fits into 540 8 times, leaving a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 2360.327868
Deduct 488 from 540 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 13:
61 goes into 520 8 times with a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 2360.3278688
The remainder is 32 after subtracting 488 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

In conclusion, the division gives 2360.3278688 with a balance of 3.2e-07.