Let's divide 3454135 by 669
We want to divide 3454135 by 669.

On to step 1:
The number 669 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 669

Going ahead to step 2:
669 goes into 34 0 times with a remainder of 34.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 34 leaves us with 34.
Include the next digit (5) from the dividend after 34, then repeat: 345 / 669

Let's proceed to step 3:
The number 669 fits into 345 0 times, leaving a remainder of 345.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 345 after subtracting 0 from 345.
Include the next digit (4) from the dividend after 345, then repeat: 3454 / 669

Let's proceed to step 4:
669 can be fit into 3454 5 times, resulting in a remainder of 109.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 3345 from 3454 and we're left with 109.
Fetch the next digit (1) from the dividend, attach it to 109 and continue: 1091 / 669

Step 5:
If we divide 1091 by 669, we get 1 and a remainder of 422.
The number 1 becomes the next digit in our result. 
Result so far: 51.0
If we take 669 away from 1091, we end up with 422.
Grab the next digit (3) from the dividend, add it to 422, then carry on: 4223 / 669

Advancing to step 6:
669 goes into 4223 6 times with a remainder of 209.
Write down 6 as next digit of the result. 
Result so far: 516.0
Subtracting 4014 from 4223 leaves us with 209.
Append the next digit (5) from the dividend to 209 and continue with: 2095 / 669

Step 7:
If we divide 2095 by 669, we get 3 and a remainder of 88.
The number 3 becomes the next digit in our result. 
Result so far: 5163.0
Deduct 2007 from 2095 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Going ahead to step 8:
669 can be fit into 880 1 times, resulting in a remainder of 211.
Put 1 as the next digit of the answer. 
Result so far: 5163.1
The remainder is 211 after subtracting 669 from 880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

On to step 9:
669 can be fit into 2110 3 times, resulting in a remainder of 103.
The number 3 becomes the next digit in our result. 
Result so far: 5163.13
If we take 2007 away from 2110, we end up with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Going ahead to step 10:
When dividing 1030 by 669, we get 1 with a remainder of 361.
Put 1 as the next digit of the answer. 
Result so far: 5163.131
The remainder is 361 after subtracting 669 from 1030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3610, and continue the process.

Going ahead to step 11:
When dividing 3610 by 669, we get 5 with a remainder of 265.
Record the quotient 5 as the next digit in the result. 
Result so far: 5163.1315
If we take 3345 away from 3610, we end up with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Advancing to step 12:
669 can be fit into 2650 3 times, resulting in a remainder of 643.
Write down 3 as next digit of the result. 
Result so far: 5163.13153
The remainder is 643 after subtracting 2007 from 2650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6430, and continue the process.

Going ahead to step 13:
6430 divided by 669 is 9 with a remainder of 409.
The next digit of our result is 9. 
Result so far: 5163.131539
Deduct 6021 from 6430 and we're left with 409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

Advancing to step 14:
669 goes into 4090 6 times with a remainder of 76.
The next digit of our result is 6. 
Result so far: 5163.1315396
Subtract 4014 from 4090 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 15:
The number 669 fits into 760 1 times, leaving a remainder of 91.
The next digit of our result is 1. 
Result so far: 5163.13153961
Deduct 669 from 760 and we're left with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

The final outcome is 5163.13153961, with a leftover of 9.1e-08.