61611878 ÷ 511 
We want to figure out the number of times 61611878 can be divided by 511.

Going ahead to step 1:
511 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 511

Going ahead to step 2:
61 divided by 511 is 0 with a remainder of 61.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 61 after subtracting 0 from 61.
Include the next digit (6) from the dividend after 61, then repeat: 616 / 511

Going ahead to step 3:
511 goes into 616 1 times with a remainder of 105.
The next digit of our result is 1. 
Result so far: 1.0
If we take 511 away from 616, we end up with 105.
Include the next digit (1) from the dividend after 105, then repeat: 1051 / 511

On to step 4:
When dividing 1051 by 511, we get 2 with a remainder of 29.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtracting 1022 from 1051 leaves us with 29.
Fetch the next digit (1) from the dividend, attach it to 29 and continue: 291 / 511

Let's proceed to step 5:
If we divide 291 by 511, we get 0 and a remainder of 291.
Record the quotient 0 as the next digit in the result. 
Result so far: 120.0
If we take 0 away from 291, we end up with 291.
Take the next digit (8) from the dividend and append it to 291, then repeat: 2918 / 511

On to step 6:
When dividing 2918 by 511, we get 5 with a remainder of 363.
The next digit of our result is 5. 
Result so far: 1205.0
Subtract 2555 from 2918 to get 363.
Grab the next digit (7) from the dividend, add it to 363, then carry on: 3637 / 511

Step 7:
When dividing 3637 by 511, we get 7 with a remainder of 60.
The number 7 becomes the next digit in our result. 
Result so far: 12057.0
The remainder is 60 after subtracting 3577 from 3637.
Take the next digit (8) from the dividend and append it to 60, then repeat: 608 / 511

Advancing to step 8:
511 can be fit into 608 1 times, resulting in a remainder of 97.
Put 1 as the next digit of the answer. 
Result so far: 120571.0
Subtracting 511 from 608 leaves us with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Advancing to step 9:
When dividing 970 by 511, we get 1 with a remainder of 459.
Put 1 as the next digit of the answer. 
Result so far: 120571.1
If we take 511 away from 970, we end up with 459.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4590, and continue the process.

Going ahead to step 10:
If we divide 4590 by 511, we get 8 and a remainder of 502.
Record the quotient 8 as the next digit in the result. 
Result so far: 120571.18
Deduct 4088 from 4590 and we're left with 502.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5020, and continue the process.

Let's proceed to step 11:
511 can be fit into 5020 9 times, resulting in a remainder of 421.
Write down 9 as next digit of the result. 
Result so far: 120571.189
Subtract 4599 from 5020 to get 421.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4210, and continue the process.

Let's proceed to step 12:
511 goes into 4210 8 times with a remainder of 122.
Use 8 as the next digit of our solution. 
Result so far: 120571.1898
If we take 4088 away from 4210, we end up with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

On to step 13:
511 goes into 1220 2 times with a remainder of 198.
The number 2 becomes the next digit in our result. 
Result so far: 120571.18982
If we subtract 1022 from 1220, 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.

Going ahead to step 14:
The number 511 fits into 1980 3 times, leaving a remainder of 447.
Use 3 as the next digit of our solution. 
Result so far: 120571.189823
Subtracting 1533 from 1980 leaves us with 447.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4470, and continue the process.

Going ahead to step 15:
511 goes into 4470 8 times with a remainder of 382.
Use 8 as the next digit of our solution. 
Result so far: 120571.1898238
Subtract 4088 from 4470 to get 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Step 16:
If we divide 3820 by 511, we get 7 and a remainder of 243.
Put 7 as the next digit of the answer. 
Result so far: 120571.18982387
Subtract 3577 from 3820 to get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

The final result is 120571.18982387 with a remainder of 2.43e-07.