We look at the division of 16721957 by 141 
Let's see how many times 141 fits into 16721957.

Going ahead to step 1:
If we divide 1 by 141, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 141

Moving on to step 2:
If we divide 16 by 141, we get 0 and a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 16, we get 16.
Bring next digit (7) of the dividend behind the 16 and repeat the process: 167 / 141

Let's proceed to step 3:
If we divide 167 by 141, we get 1 and a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 26 after subtracting 141 from 167.
Grab the next digit (2) from the dividend, add it to 26, then carry on: 262 / 141

Step 4:
When dividing 262 by 141, we get 1 with a remainder of 121.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we take 141 away from 262, we end up with 121.
Bring next digit (1) of the dividend behind the 121 and repeat the process: 1211 / 141

Going ahead to step 5:
When dividing 1211 by 141, we get 8 with a remainder of 83.
Put 8 as the next digit of the answer. 
Result so far: 118.0
Subtract 1128 from 1211 to get 83.
Bring next digit (9) of the dividend behind the 83 and repeat the process: 839 / 141

Step 6:
141 can be fit into 839 5 times, resulting in a remainder of 134.
Record the quotient 5 as the next digit in the result. 
Result so far: 1185.0
If we subtract 705 from 839, we get 134.
Grab the next digit (5) from the dividend, add it to 134, then carry on: 1345 / 141

On to step 7:
141 goes into 1345 9 times with a remainder of 76.
Write down 9 as next digit of the result. 
Result so far: 11859.0
Subtract 1269 from 1345 to get 76.
Take the next digit (7) from the dividend and append it to 76, then repeat: 767 / 141

Step 8:
141 goes into 767 5 times with a remainder of 62.
The number 5 becomes the next digit in our result. 
Result so far: 118595.0
If we subtract 705 from 767, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 9:
620 divided by 141 is 4 with a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 118595.4
Subtracting 564 from 620 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 10:
When dividing 560 by 141, we get 3 with a remainder of 137.
Put 3 as the next digit of the answer. 
Result so far: 118595.43
Subtract 423 from 560 to get 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

On to step 11:
The number 141 fits into 1370 9 times, leaving a remainder of 101.
The number 9 becomes the next digit in our result. 
Result so far: 118595.439
If we subtract 1269 from 1370, we get 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Let's proceed to step 12:
The number 141 fits into 1010 7 times, leaving a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 118595.4397
Deduct 987 from 1010 and we're left with 23.
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 13:
The number 141 fits into 230 1 times, leaving a remainder of 89.
Record the quotient 1 as the next digit in the result. 
Result so far: 118595.43971
If we subtract 141 from 230, we get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

On to step 14:
If we divide 890 by 141, we get 6 and a remainder of 44.
The next digit of our result is 6. 
Result so far: 118595.439716
If we take 846 away from 890, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 15:
If we divide 440 by 141, we get 3 and a remainder of 17.
The next digit of our result is 3. 
Result so far: 118595.4397163
Subtract 423 from 440 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 16:
170 divided by 141 is 1 with a remainder of 29.
The next digit of our result is 1. 
Result so far: 118595.43971631
Subtracting 141 from 170 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

The final outcome is 118595.43971631, with a leftover of 2.9e-08.