621680 ÷ 86 
We want to figure out the number of times 621680 can be divided by 86.

Advancing to step 1:
When dividing 6 by 86, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 86

Advancing to step 2:
86 goes into 62 0 times with a remainder of 62.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 62 and we're left with 62.
Grab the next digit (1) from the dividend, add it to 62, then carry on: 621 / 86

Let's proceed to step 3:
86 goes into 621 7 times with a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Deduct 602 from 621 and we're left with 19.
Grab the next digit (6) from the dividend, add it to 19, then carry on: 196 / 86

Let's proceed to step 4:
When dividing 196 by 86, we get 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 72.0
The remainder is 24 after subtracting 172 from 196.
Append the next digit (8) from the dividend to 24 and continue with: 248 / 86

Step 5:
248 divided by 86 is 2 with a remainder of 76.
The number 2 becomes the next digit in our result. 
Result so far: 722.0
Deduct 172 from 248 and we're left with 76.
Grab the next digit (0) from the dividend, add it to 76, then carry on: 760 / 86

Going ahead to step 6:
When dividing 760 by 86, we get 8 with a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 7228.0
If we take 688 away from 760, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 7:
If we divide 720 by 86, we get 8 and a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 7228.8
Subtract 688 from 720 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 8:
320 divided by 86 is 3 with a remainder of 62.
The next digit of our result is 3. 
Result so far: 7228.83
Deduct 258 from 320 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 9:
When dividing 620 by 86, we get 7 with a remainder of 18.
Write down 7 as next digit of the result. 
Result so far: 7228.837
If we subtract 602 from 620, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 10:
When dividing 180 by 86, we get 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 7228.8372
Subtracting 172 from 180 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 11:
86 goes into 80 0 times with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 7228.8372
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 12:
86 can be fit into 800 9 times, resulting in a remainder of 26.
Put 9 as the next digit of the answer. 
Result so far: 7228.837209
If we take 774 away from 800, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 13:
86 can be fit into 260 3 times, resulting in a remainder of 2.
The next digit of our result is 3. 
Result so far: 7228.8372093
Subtract 258 from 260 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
86 goes into 20 0 times with a remainder of 20.
The next digit of our result is 0. 
Result so far: 7228.8372093
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 7228.8372093, with a leftover of 2e-08.