Let's divide 1421625 by 300
We're looking to find how many times 300 goes into 1421625.

Going ahead to step 1:
The number 300 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (4) from the dividend, attach it to 1 and continue: 14 / 300

Going ahead to step 2:
When dividing 14 by 300, we get 0 with a remainder of 14.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 14 after subtracting 0 from 14.
Fetch the next digit (2) from the dividend, attach it to 14 and continue: 142 / 300

Step 3:
If we divide 142 by 300, we get 0 and a remainder of 142.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 142 to get 142.
Grab the next digit (1) from the dividend, add it to 142, then carry on: 1421 / 300

Let's proceed to step 4:
If we divide 1421 by 300, we get 4 and a remainder of 221.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 1200 from 1421 to get 221.
Append the next digit (6) from the dividend to 221 and continue with: 2216 / 300

Moving on to step 5:
2216 divided by 300 is 7 with a remainder of 116.
The next digit of our result is 7. 
Result so far: 47.0
Subtracting 2100 from 2216 leaves us with 116.
Include the next digit (2) from the dividend after 116, then repeat: 1162 / 300

Moving on to step 6:
1162 divided by 300 is 3 with a remainder of 262.
Put 3 as the next digit of the answer. 
Result so far: 473.0
Subtracting 900 from 1162 leaves us with 262.
Append the next digit (5) from the dividend to 262 and continue with: 2625 / 300

On to step 7:
2625 divided by 300 is 8 with a remainder of 225.
Put 8 as the next digit of the answer. 
Result so far: 4738.0
The remainder is 225 after subtracting 2400 from 2625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Step 8:
If we divide 2250 by 300, we get 7 and a remainder of 150.
Write down 7 as next digit of the result. 
Result so far: 4738.7
If we subtract 2100 from 2250, we get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 9:
When dividing 1500 by 300, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 4738.75
Subtract 1500 from 1500 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
0 divided by 300 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4738.75
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
0 divided by 300 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4738.75
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 4738.75 with a remainder of 0.0.