42121581 ÷ 691 
Let's see how many times 691 fits into 42121581.

Going ahead to step 1:
691 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 691

Step 2:
The number 691 fits into 42 0 times, leaving a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Include the next digit (1) from the dividend after 42, then repeat: 421 / 691

Advancing to step 3:
691 goes into 421 0 times with a remainder of 421.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 421 after subtracting 0 from 421.
Grab the next digit (2) from the dividend, add it to 421, then carry on: 4212 / 691

Moving on to step 4:
691 can be fit into 4212 6 times, resulting in a remainder of 66.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we take 4146 away from 4212, we end up with 66.
Include the next digit (1) from the dividend after 66, then repeat: 661 / 691

Let's proceed to step 5:
661 divided by 691 is 0 with a remainder of 661.
Use 0 as the next digit of our solution. 
Result so far: 60.0
Subtract 0 from 661 to get 661.
Append the next digit (5) from the dividend to 661 and continue with: 6615 / 691

On to step 6:
When dividing 6615 by 691, we get 9 with a remainder of 396.
Record the quotient 9 as the next digit in the result. 
Result so far: 609.0
Subtracting 6219 from 6615 leaves us with 396.
Take the next digit (8) from the dividend and append it to 396, then repeat: 3968 / 691

Advancing to step 7:
691 goes into 3968 5 times with a remainder of 513.
Record the quotient 5 as the next digit in the result. 
Result so far: 6095.0
Deduct 3455 from 3968 and we're left with 513.
Grab the next digit (1) from the dividend, add it to 513, then carry on: 5131 / 691

Advancing to step 8:
If we divide 5131 by 691, we get 7 and a remainder of 294.
Write down 7 as next digit of the result. 
Result so far: 60957.0
The remainder is 294 after subtracting 4837 from 5131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

On to step 9:
691 can be fit into 2940 4 times, resulting in a remainder of 176.
The next digit of our result is 4. 
Result so far: 60957.4
If we subtract 2764 from 2940, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Advancing to step 10:
If we divide 1760 by 691, we get 2 and a remainder of 378.
Put 2 as the next digit of the answer. 
Result so far: 60957.42
If we subtract 1382 from 1760, we get 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Step 11:
691 can be fit into 3780 5 times, resulting in a remainder of 325.
Put 5 as the next digit of the answer. 
Result so far: 60957.425
The remainder is 325 after subtracting 3455 from 3780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Going ahead to step 12:
691 goes into 3250 4 times with a remainder of 486.
The number 4 becomes the next digit in our result. 
Result so far: 60957.4254
Deduct 2764 from 3250 and we're left with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Advancing to step 13:
4860 divided by 691 is 7 with a remainder of 23.
The next digit of our result is 7. 
Result so far: 60957.42547
Subtract 4837 from 4860 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 14:
When dividing 230 by 691, we get 0 with a remainder of 230.
Use 0 as the next digit of our solution. 
Result so far: 60957.42547
Subtract 0 from 230 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 15:
The number 691 fits into 2300 3 times, leaving a remainder of 227.
Write down 3 as next digit of the result. 
Result so far: 60957.4254703
The remainder is 227 after subtracting 2073 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Let's proceed to step 16:
The number 691 fits into 2270 3 times, leaving a remainder of 197.
The number 3 becomes the next digit in our result. 
Result so far: 60957.42547033
The remainder is 197 after subtracting 2073 from 2270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

In conclusion, the division gives 60957.42547033 with a balance of 1.97e-07.