42158409 divided by 651 
Our goal is to divide 42158409 by 651.

On to step 1:
If we divide 4 by 651, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 651

Step 2:
If we divide 42 by 651, we get 0 and a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Append the next digit (1) from the dividend to 42 and continue with: 421 / 651

Step 3:
421 divided by 651 is 0 with a remainder of 421.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 421 leaves us with 421.
Grab the next digit (5) from the dividend, add it to 421, then carry on: 4215 / 651

Moving on to step 4:
651 goes into 4215 6 times with a remainder of 309.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 309 after subtracting 3906 from 4215.
Grab the next digit (8) from the dividend, add it to 309, then carry on: 3098 / 651

Going ahead to step 5:
If we divide 3098 by 651, we get 4 and a remainder of 494.
Put 4 as the next digit of the answer. 
Result so far: 64.0
If we take 2604 away from 3098, we end up with 494.
Include the next digit (4) from the dividend after 494, then repeat: 4944 / 651

Moving on to step 6:
651 goes into 4944 7 times with a remainder of 387.
The number 7 becomes the next digit in our result. 
Result so far: 647.0
Subtract 4557 from 4944 to get 387.
Bring next digit (0) of the dividend behind the 387 and repeat the process: 3870 / 651

Moving on to step 7:
When dividing 3870 by 651, we get 5 with a remainder of 615.
Record the quotient 5 as the next digit in the result. 
Result so far: 6475.0
Deduct 3255 from 3870 and we're left with 615.
Take the next digit (9) from the dividend and append it to 615, then repeat: 6159 / 651

Going ahead to step 8:
When dividing 6159 by 651, we get 9 with a remainder of 300.
Use 9 as the next digit of our solution. 
Result so far: 64759.0
The remainder is 300 after subtracting 5859 from 6159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Going ahead to step 9:
If we divide 3000 by 651, we get 4 and a remainder of 396.
Write down 4 as next digit of the result. 
Result so far: 64759.4
Subtracting 2604 from 3000 leaves us with 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Let's proceed to step 10:
3960 divided by 651 is 6 with a remainder of 54.
Write down 6 as next digit of the result. 
Result so far: 64759.46
Subtract 3906 from 3960 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 11:
651 goes into 540 0 times with a remainder of 540.
Record the quotient 0 as the next digit in the result. 
Result so far: 64759.46
If we subtract 0 from 540, we get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Moving on to step 12:
The number 651 fits into 5400 8 times, leaving a remainder of 192.
Use 8 as the next digit of our solution. 
Result so far: 64759.4608
Subtract 5208 from 5400 to get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

On to step 13:
The number 651 fits into 1920 2 times, leaving a remainder of 618.
The next digit of our result is 2. 
Result so far: 64759.46082
Subtract 1302 from 1920 to get 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Step 14:
651 can be fit into 6180 9 times, resulting in a remainder of 321.
Put 9 as the next digit of the answer. 
Result so far: 64759.460829
If we take 5859 away from 6180, we end up with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Step 15:
651 goes into 3210 4 times with a remainder of 606.
Write down 4 as next digit of the result. 
Result so far: 64759.4608294
The remainder is 606 after subtracting 2604 from 3210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

On to step 16:
651 goes into 6060 9 times with a remainder of 201.
Use 9 as the next digit of our solution. 
Result so far: 64759.46082949
Subtracting 5859 from 6060 leaves us with 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Our division results in 64759.46082949 with a remaining 2.01e-07.