We look at the division of 1661329 by 345 
We want to divide 1661329 by 345.

Going ahead to step 1:
345 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 345

On to step 2:
When dividing 16 by 345, we get 0 with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Bring next digit (6) of the dividend behind the 16 and repeat the process: 166 / 345

Advancing to step 3:
166 divided by 345 is 0 with a remainder of 166.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 166 leaves us with 166.
Bring next digit (1) of the dividend behind the 166 and repeat the process: 1661 / 345

Step 4:
If we divide 1661 by 345, we get 4 and a remainder of 281.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 1380 from 1661 and we're left with 281.
Take the next digit (3) from the dividend and append it to 281, then repeat: 2813 / 345

Advancing to step 5:
The number 345 fits into 2813 8 times, leaving a remainder of 53.
Put 8 as the next digit of the answer. 
Result so far: 48.0
Deduct 2760 from 2813 and we're left with 53.
Bring next digit (2) of the dividend behind the 53 and repeat the process: 532 / 345

Going ahead to step 6:
The number 345 fits into 532 1 times, leaving a remainder of 187.
Record the quotient 1 as the next digit in the result. 
Result so far: 481.0
Subtracting 345 from 532 leaves us with 187.
Take the next digit (9) from the dividend and append it to 187, then repeat: 1879 / 345

On to step 7:
When dividing 1879 by 345, we get 5 with a remainder of 154.
Record the quotient 5 as the next digit in the result. 
Result so far: 4815.0
The remainder is 154 after subtracting 1725 from 1879.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Step 8:
1540 divided by 345 is 4 with a remainder of 160.
Use 4 as the next digit of our solution. 
Result so far: 4815.4
The remainder is 160 after subtracting 1380 from 1540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 9:
345 can be fit into 1600 4 times, resulting in a remainder of 220.
The next digit of our result is 4. 
Result so far: 4815.44
Subtract 1380 from 1600 to get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

The final result is 4815.44 with a remainder of 0.22.