We look at the division of 21415378 by 445 
We want to figure out the number of times 21415378 can be divided by 445.

Advancing to step 1:
2 divided by 445 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 445

Going ahead to step 2:
445 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Take the next digit (4) from the dividend and append it to 21, then repeat: 214 / 445

Moving on to step 3:
445 goes into 214 0 times with a remainder of 214.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 214 to get 214.
Grab the next digit (1) from the dividend, add it to 214, then carry on: 2141 / 445

Let's proceed to step 4:
If we divide 2141 by 445, we get 4 and a remainder of 361.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 1780 from 2141, we get 361.
Append the next digit (5) from the dividend to 361 and continue with: 3615 / 445

On to step 5:
445 goes into 3615 8 times with a remainder of 55.
Write down 8 as next digit of the result. 
Result so far: 48.0
If we take 3560 away from 3615, we end up with 55.
Take the next digit (3) from the dividend and append it to 55, then repeat: 553 / 445

Moving on to step 6:
445 can be fit into 553 1 times, resulting in a remainder of 108.
The number 1 becomes the next digit in our result. 
Result so far: 481.0
Subtracting 445 from 553 leaves us with 108.
Bring next digit (7) of the dividend behind the 108 and repeat the process: 1087 / 445

On to step 7:
When dividing 1087 by 445, we get 2 with a remainder of 197.
Write down 2 as next digit of the result. 
Result so far: 4812.0
If we subtract 890 from 1087, we get 197.
Grab the next digit (8) from the dividend, add it to 197, then carry on: 1978 / 445

Advancing to step 8:
445 goes into 1978 4 times with a remainder of 198.
Put 4 as the next digit of the answer. 
Result so far: 48124.0
If we subtract 1780 from 1978, we get 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Step 9:
If we divide 1980 by 445, we get 4 and a remainder of 200.
Use 4 as the next digit of our solution. 
Result so far: 48124.4
Subtracting 1780 from 1980 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 10:
2000 divided by 445 is 4 with a remainder of 220.
Use 4 as the next digit of our solution. 
Result so far: 48124.44
The remainder is 220 after subtracting 1780 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Our division results in 48124.44 with a remaining 0.22.