Let's divide 377511 by 21
We're looking to find how many times 21 goes into 377511.

Moving on to step 1:
3 divided by 21 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 21

On to step 2:
37 divided by 21 is 1 with a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 16 after subtracting 21 from 37.
Bring next digit (7) of the dividend behind the 16 and repeat the process: 167 / 21

Let's proceed to step 3:
167 divided by 21 is 7 with a remainder of 20.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we take 147 away from 167, we end up with 20.
Take the next digit (5) from the dividend and append it to 20, then repeat: 205 / 21

Advancing to step 4:
205 divided by 21 is 9 with a remainder of 16.
Record the quotient 9 as the next digit in the result. 
Result so far: 179.0
If we take 189 away from 205, we end up with 16.
Take the next digit (1) from the dividend and append it to 16, then repeat: 161 / 21

Going ahead to step 5:
21 can be fit into 161 7 times, resulting in a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 1797.0
If we take 147 away from 161, we end up with 14.
Bring next digit (1) of the dividend behind the 14 and repeat the process: 141 / 21

Let's proceed to step 6:
If we divide 141 by 21, we get 6 and a remainder of 15.
Put 6 as the next digit of the answer. 
Result so far: 17976.0
The remainder is 15 after subtracting 126 from 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 7:
If we divide 150 by 21, we get 7 and a remainder of 3.
The next digit of our result is 7. 
Result so far: 17976.7
If we subtract 147 from 150, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 8:
21 goes into 30 1 times with a remainder of 9.
The next digit of our result is 1. 
Result so far: 17976.71
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 9:
21 goes into 90 4 times with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 17976.714
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 10:
When dividing 60 by 21, we get 2 with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 17976.7142
The remainder is 18 after subtracting 42 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 11:
180 divided by 21 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 17976.71428
If we take 168 away from 180, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 12:
The number 21 fits into 120 5 times, leaving a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 17976.714285
If we take 105 away from 120, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 13:
When dividing 150 by 21, we get 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 17976.7142857
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 14:
If we divide 30 by 21, we get 1 and a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 17976.71428571
Subtracting 21 from 30 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

After the division, we end up with 17976.71428571 and a remainder of 9e-09.