77405990 ÷ 526 
Our goal is to divide 77405990 by 526.

Step 1:
If we divide 7 by 526, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 526

Going ahead to step 2:
77 divided by 526 is 0 with a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Take the next digit (4) from the dividend and append it to 77, then repeat: 774 / 526

On to step 3:
526 goes into 774 1 times with a remainder of 248.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 526 from 774 leaves us with 248.
Bring next digit (0) of the dividend behind the 248 and repeat the process: 2480 / 526

Let's proceed to step 4:
The number 526 fits into 2480 4 times, leaving a remainder of 376.
Write down 4 as next digit of the result. 
Result so far: 14.0
Deduct 2104 from 2480 and we're left with 376.
Bring next digit (5) of the dividend behind the 376 and repeat the process: 3765 / 526

Moving on to step 5:
When dividing 3765 by 526, we get 7 with a remainder of 83.
Put 7 as the next digit of the answer. 
Result so far: 147.0
If we take 3682 away from 3765, we end up with 83.
Bring next digit (9) of the dividend behind the 83 and repeat the process: 839 / 526

Let's proceed to step 6:
526 can be fit into 839 1 times, resulting in a remainder of 313.
Put 1 as the next digit of the answer. 
Result so far: 1471.0
If we subtract 526 from 839, we get 313.
Append the next digit (9) from the dividend to 313 and continue with: 3139 / 526

Going ahead to step 7:
If we divide 3139 by 526, we get 5 and a remainder of 509.
The next digit of our result is 5. 
Result so far: 14715.0
Deduct 2630 from 3139 and we're left with 509.
Include the next digit (0) from the dividend after 509, then repeat: 5090 / 526

Moving on to step 8:
5090 divided by 526 is 9 with a remainder of 356.
Write down 9 as next digit of the result. 
Result so far: 147159.0
Subtract 4734 from 5090 to get 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

On to step 9:
If we divide 3560 by 526, we get 6 and a remainder of 404.
The next digit of our result is 6. 
Result so far: 147159.6
Deduct 3156 from 3560 and we're left with 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

On to step 10:
526 goes into 4040 7 times with a remainder of 358.
The next digit of our result is 7. 
Result so far: 147159.67
Subtracting 3682 from 4040 leaves us with 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Going ahead to step 11:
3580 divided by 526 is 6 with a remainder of 424.
Use 6 as the next digit of our solution. 
Result so far: 147159.676
If we subtract 3156 from 3580, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Going ahead to step 12:
4240 divided by 526 is 8 with a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 147159.6768
Subtract 4208 from 4240 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 13:
The number 526 fits into 320 0 times, leaving a remainder of 320.
Put 0 as the next digit of the answer. 
Result so far: 147159.6768
Deduct 0 from 320 and we're left with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 14:
526 can be fit into 3200 6 times, resulting in a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 147159.676806
If we take 3156 away from 3200, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 15:
440 divided by 526 is 0 with a remainder of 440.
Use 0 as the next digit of our solution. 
Result so far: 147159.676806
If we take 0 away from 440, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Going ahead to step 16:
If we divide 4400 by 526, we get 8 and a remainder of 192.
The number 8 becomes the next digit in our result. 
Result so far: 147159.67680608
The remainder is 192 after subtracting 4208 from 4400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

The quotient of the division is 147159.67680608, and the remainder is 1.92e-07.