64420074 ÷ 721 
We want to figure out the number of times 64420074 can be divided by 721.

Step 1:
The number 721 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 721

Going ahead to step 2:
The number 721 fits into 64 0 times, leaving a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Fetch the next digit (4) from the dividend, attach it to 64 and continue: 644 / 721

Let's proceed to step 3:
721 can be fit into 644 0 times, resulting in a remainder of 644.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 644 after subtracting 0 from 644.
Grab the next digit (2) from the dividend, add it to 644, then carry on: 6442 / 721

Moving on to step 4:
The number 721 fits into 6442 8 times, leaving a remainder of 674.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we subtract 5768 from 6442, we get 674.
Append the next digit (0) from the dividend to 674 and continue with: 6740 / 721

Step 5:
721 can be fit into 6740 9 times, resulting in a remainder of 251.
Put 9 as the next digit of the answer. 
Result so far: 89.0
Deduct 6489 from 6740 and we're left with 251.
Append the next digit (0) from the dividend to 251 and continue with: 2510 / 721

Going ahead to step 6:
721 can be fit into 2510 3 times, resulting in a remainder of 347.
The next digit of our result is 3. 
Result so far: 893.0
If we subtract 2163 from 2510, we get 347.
Append the next digit (7) from the dividend to 347 and continue with: 3477 / 721

Advancing to step 7:
The number 721 fits into 3477 4 times, leaving a remainder of 593.
The number 4 becomes the next digit in our result. 
Result so far: 8934.0
The remainder is 593 after subtracting 2884 from 3477.
Grab the next digit (4) from the dividend, add it to 593, then carry on: 5934 / 721

Let's proceed to step 8:
If we divide 5934 by 721, we get 8 and a remainder of 166.
Use 8 as the next digit of our solution. 
Result so far: 89348.0
Subtract 5768 from 5934 to get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Let's proceed to step 9:
721 goes into 1660 2 times with a remainder of 218.
The next digit of our result is 2. 
Result so far: 89348.2
Deduct 1442 from 1660 and we're left with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Step 10:
If we divide 2180 by 721, we get 3 and a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 89348.23
If we take 2163 away from 2180, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 11:
If we divide 170 by 721, we get 0 and a remainder of 170.
The next digit of our result is 0. 
Result so far: 89348.23
The remainder is 170 after subtracting 0 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Going ahead to step 12:
1700 divided by 721 is 2 with a remainder of 258.
The number 2 becomes the next digit in our result. 
Result so far: 89348.2302
If we subtract 1442 from 1700, we get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Let's proceed to step 13:
The number 721 fits into 2580 3 times, leaving a remainder of 417.
The next digit of our result is 3. 
Result so far: 89348.23023
Subtracting 2163 from 2580 leaves us with 417.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4170, and continue the process.

Advancing to step 14:
The number 721 fits into 4170 5 times, leaving a remainder of 565.
The number 5 becomes the next digit in our result. 
Result so far: 89348.230235
If we take 3605 away from 4170, we end up with 565.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5650, and continue the process.

Advancing to step 15:
721 can be fit into 5650 7 times, resulting in a remainder of 603.
Write down 7 as next digit of the result. 
Result so far: 89348.2302357
Subtracting 5047 from 5650 leaves us with 603.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6030, and continue the process.

Moving on to step 16:
6030 divided by 721 is 8 with a remainder of 262.
Record the quotient 8 as the next digit in the result. 
Result so far: 89348.23023578
Subtract 5768 from 6030 to get 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

The final outcome is 89348.23023578, with a leftover of 2.62e-07.