Let's divide 78128605 by 161
We want to figure out the number of times 78128605 can be divided by 161.

On to step 1:
When dividing 7 by 161, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 161

Moving on to step 2:
When dividing 78 by 161, we get 0 with a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Bring next digit (1) of the dividend behind the 78 and repeat the process: 781 / 161

Moving on to step 3:
161 can be fit into 781 4 times, resulting in a remainder of 137.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 644 from 781 to get 137.
Fetch the next digit (2) from the dividend, attach it to 137 and continue: 1372 / 161

Going ahead to step 4:
161 can be fit into 1372 8 times, resulting in a remainder of 84.
Put 8 as the next digit of the answer. 
Result so far: 48.0
Subtracting 1288 from 1372 leaves us with 84.
Take the next digit (8) from the dividend and append it to 84, then repeat: 848 / 161

Let's proceed to step 5:
The number 161 fits into 848 5 times, leaving a remainder of 43.
Use 5 as the next digit of our solution. 
Result so far: 485.0
Subtracting 805 from 848 leaves us with 43.
Fetch the next digit (6) from the dividend, attach it to 43 and continue: 436 / 161

Going ahead to step 6:
If we divide 436 by 161, we get 2 and a remainder of 114.
The number 2 becomes the next digit in our result. 
Result so far: 4852.0
Subtracting 322 from 436 leaves us with 114.
Append the next digit (0) from the dividend to 114 and continue with: 1140 / 161

Let's proceed to step 7:
161 goes into 1140 7 times with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 48527.0
Subtract 1127 from 1140 to get 13.
Bring next digit (5) of the dividend behind the 13 and repeat the process: 135 / 161

Moving on to step 8:
The number 161 fits into 135 0 times, leaving a remainder of 135.
Write down 0 as next digit of the result. 
Result so far: 485270.0
If we take 0 away from 135, we end up with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Going ahead to step 9:
When dividing 1350 by 161, we get 8 with a remainder of 62.
The next digit of our result is 8. 
Result so far: 485270.8
The remainder is 62 after subtracting 1288 from 1350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Advancing to step 10:
161 can be fit into 620 3 times, resulting in a remainder of 137.
Put 3 as the next digit of the answer. 
Result so far: 485270.83
If we subtract 483 from 620, we get 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

Advancing to step 11:
1370 divided by 161 is 8 with a remainder of 82.
The next digit of our result is 8. 
Result so far: 485270.838
Deduct 1288 from 1370 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 12:
The number 161 fits into 820 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 485270.8385
If we subtract 805 from 820, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 13:
150 divided by 161 is 0 with a remainder of 150.
Put 0 as the next digit of the answer. 
Result so far: 485270.8385
Subtract 0 from 150 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 14:
161 goes into 1500 9 times with a remainder of 51.
The number 9 becomes the next digit in our result. 
Result so far: 485270.838509
The remainder is 51 after subtracting 1449 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 15:
If we divide 510 by 161, we get 3 and a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 485270.8385093
If we take 483 away from 510, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 16:
161 can be fit into 270 1 times, resulting in a remainder of 109.
The number 1 becomes the next digit in our result. 
Result so far: 485270.83850931
Subtracting 161 from 270 leaves us with 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

After the division, we end up with 485270.83850931 and a remainder of 1.09e-07.