35148558 ÷ 661 
Our goal is to divide 35148558 by 661.

Going ahead to step 1:
When dividing 3 by 661, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 661

On to step 2:
661 goes into 35 0 times with a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 35 after subtracting 0 from 35.
Fetch the next digit (1) from the dividend, attach it to 35 and continue: 351 / 661

On to step 3:
661 can be fit into 351 0 times, resulting in a remainder of 351.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 351 leaves us with 351.
Bring next digit (4) of the dividend behind the 351 and repeat the process: 3514 / 661

Let's proceed to step 4:
If we divide 3514 by 661, we get 5 and a remainder of 209.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 209 after subtracting 3305 from 3514.
Grab the next digit (8) from the dividend, add it to 209, then carry on: 2098 / 661

Step 5:
The number 661 fits into 2098 3 times, leaving a remainder of 115.
Write down 3 as next digit of the result. 
Result so far: 53.0
Subtracting 1983 from 2098 leaves us with 115.
Grab the next digit (5) from the dividend, add it to 115, then carry on: 1155 / 661

On to step 6:
661 goes into 1155 1 times with a remainder of 494.
Put 1 as the next digit of the answer. 
Result so far: 531.0
Subtract 661 from 1155 to get 494.
Append the next digit (5) from the dividend to 494 and continue with: 4945 / 661

Advancing to step 7:
4945 divided by 661 is 7 with a remainder of 318.
Put 7 as the next digit of the answer. 
Result so far: 5317.0
If we subtract 4627 from 4945, we get 318.
Include the next digit (8) from the dividend after 318, then repeat: 3188 / 661

Moving on to step 8:
3188 divided by 661 is 4 with a remainder of 544.
Write down 4 as next digit of the result. 
Result so far: 53174.0
If we subtract 2644 from 3188, we get 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Let's proceed to step 9:
661 can be fit into 5440 8 times, resulting in a remainder of 152.
Put 8 as the next digit of the answer. 
Result so far: 53174.8
Subtracting 5288 from 5440 leaves us with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Advancing to step 10:
When dividing 1520 by 661, we get 2 with a remainder of 198.
Record the quotient 2 as the next digit in the result. 
Result so far: 53174.82
If we subtract 1322 from 1520, we get 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Advancing to step 11:
1980 divided by 661 is 2 with a remainder of 658.
Put 2 as the next digit of the answer. 
Result so far: 53174.822
Subtract 1322 from 1980 to get 658.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6580, and continue the process.

The final outcome is 53174.822, with a leftover of 0.0658.