63973571 ÷ 620 
Our goal is to divide 63973571 by 620.

Moving on to step 1:
If we divide 6 by 620, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 620

Going ahead to step 2:
The number 620 fits into 63 0 times, leaving a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Grab the next digit (9) from the dividend, add it to 63, then carry on: 639 / 620

Going ahead to step 3:
620 goes into 639 1 times with a remainder of 19.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 620 from 639 and we're left with 19.
Bring next digit (7) of the dividend behind the 19 and repeat the process: 197 / 620

Let's proceed to step 4:
197 divided by 620 is 0 with a remainder of 197.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we subtract 0 from 197, we get 197.
Grab the next digit (3) from the dividend, add it to 197, then carry on: 1973 / 620

Advancing to step 5:
If we divide 1973 by 620, we get 3 and a remainder of 113.
Write down 3 as next digit of the result. 
Result so far: 103.0
If we subtract 1860 from 1973, we get 113.
Grab the next digit (5) from the dividend, add it to 113, then carry on: 1135 / 620

Let's proceed to step 6:
620 can be fit into 1135 1 times, resulting in a remainder of 515.
Use 1 as the next digit of our solution. 
Result so far: 1031.0
The remainder is 515 after subtracting 620 from 1135.
Bring next digit (7) of the dividend behind the 515 and repeat the process: 5157 / 620

Going ahead to step 7:
The number 620 fits into 5157 8 times, leaving a remainder of 197.
The next digit of our result is 8. 
Result so far: 10318.0
The remainder is 197 after subtracting 4960 from 5157.
Append the next digit (1) from the dividend to 197 and continue with: 1971 / 620

Moving on to step 8:
When dividing 1971 by 620, we get 3 with a remainder of 111.
The next digit of our result is 3. 
Result so far: 103183.0
If we take 1860 away from 1971, we end up with 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Moving on to step 9:
620 goes into 1110 1 times with a remainder of 490.
The next digit of our result is 1. 
Result so far: 103183.1
Subtract 620 from 1110 to get 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Advancing to step 10:
620 goes into 4900 7 times with a remainder of 560.
The next digit of our result is 7. 
Result so far: 103183.17
Deduct 4340 from 4900 and we're left with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Going ahead to step 11:
620 can be fit into 5600 9 times, resulting in a remainder of 20.
The next digit of our result is 9. 
Result so far: 103183.179
Subtracting 5580 from 5600 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
200 divided by 620 is 0 with a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 103183.179
If we subtract 0 from 200, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 13:
620 can be fit into 2000 3 times, resulting in a remainder of 140.
Put 3 as the next digit of the answer. 
Result so far: 103183.17903
If we subtract 1860 from 2000, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 14:
The number 620 fits into 1400 2 times, leaving a remainder of 160.
Use 2 as the next digit of our solution. 
Result so far: 103183.179032
The remainder is 160 after subtracting 1240 from 1400.
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 15:
If we divide 1600 by 620, we get 2 and a remainder of 360.
Record the quotient 2 as the next digit in the result. 
Result so far: 103183.1790322
Subtracting 1240 from 1600 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

After the division, we end up with 103183.1790322 and a remainder of 3.6e-06.