We divide 64616521 by 830
We want to figure out the number of times 64616521 can be divided by 830.

Going ahead to step 1:
The number 830 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 830

Let's proceed to step 2:
830 goes into 64 0 times with a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Append the next digit (6) from the dividend to 64 and continue with: 646 / 830

Going ahead to step 3:
If we divide 646 by 830, we get 0 and a remainder of 646.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 646, we end up with 646.
Append the next digit (1) from the dividend to 646 and continue with: 6461 / 830

Step 4:
If we divide 6461 by 830, we get 7 and a remainder of 651.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 5810 from 6461 and we're left with 651.
Take the next digit (6) from the dividend and append it to 651, then repeat: 6516 / 830

Let's proceed to step 5:
When dividing 6516 by 830, we get 7 with a remainder of 706.
Use 7 as the next digit of our solution. 
Result so far: 77.0
Deduct 5810 from 6516 and we're left with 706.
Include the next digit (5) from the dividend after 706, then repeat: 7065 / 830

Step 6:
When dividing 7065 by 830, we get 8 with a remainder of 425.
The next digit of our result is 8. 
Result so far: 778.0
If we take 6640 away from 7065, we end up with 425.
Take the next digit (2) from the dividend and append it to 425, then repeat: 4252 / 830

Advancing to step 7:
830 can be fit into 4252 5 times, resulting in a remainder of 102.
The number 5 becomes the next digit in our result. 
Result so far: 7785.0
Deduct 4150 from 4252 and we're left with 102.
Bring next digit (1) of the dividend behind the 102 and repeat the process: 1021 / 830

Going ahead to step 8:
When dividing 1021 by 830, we get 1 with a remainder of 191.
Put 1 as the next digit of the answer. 
Result so far: 77851.0
Deduct 830 from 1021 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Step 9:
When dividing 1910 by 830, we get 2 with a remainder of 250.
Write down 2 as next digit of the result. 
Result so far: 77851.2
Subtract 1660 from 1910 to get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Let's proceed to step 10:
830 can be fit into 2500 3 times, resulting in a remainder of 10.
The next digit of our result is 3. 
Result so far: 77851.23
Subtracting 2490 from 2500 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 11:
If we divide 100 by 830, we get 0 and a remainder of 100.
The next digit of our result is 0. 
Result so far: 77851.23
Deduct 0 from 100 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 12:
The number 830 fits into 1000 1 times, leaving a remainder of 170.
Write down 1 as next digit of the result. 
Result so far: 77851.2301
The remainder is 170 after subtracting 830 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Advancing to step 13:
When dividing 1700 by 830, we get 2 with a remainder of 40.
The next digit of our result is 2. 
Result so far: 77851.23012
Subtract 1660 from 1700 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 14:
When dividing 400 by 830, we get 0 with a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 77851.23012
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 15:
4000 divided by 830 is 4 with a remainder of 680.
Put 4 as the next digit of the answer. 
Result so far: 77851.2301204
Subtracting 3320 from 4000 leaves us with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Going ahead to step 16:
6800 divided by 830 is 8 with a remainder of 160.
The next digit of our result is 8. 
Result so far: 77851.23012048
Deduct 6640 from 6800 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

In conclusion, the division gives 77851.23012048 with a balance of 1.6e-07.