57894685 ÷ 642 
We want to figure out the number of times 57894685 can be divided by 642.

Step 1:
5 divided by 642 is 0 with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 642

Advancing to step 2:
When dividing 57 by 642, we get 0 with a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 57, we end up with 57.
Bring next digit (8) of the dividend behind the 57 and repeat the process: 578 / 642

Advancing to step 3:
642 can be fit into 578 0 times, resulting in a remainder of 578.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 578 after subtracting 0 from 578.
Bring next digit (9) of the dividend behind the 578 and repeat the process: 5789 / 642

On to step 4:
When dividing 5789 by 642, we get 9 with a remainder of 11.
The next digit of our result is 9. 
Result so far: 9.0
Deduct 5778 from 5789 and we're left with 11.
Take the next digit (4) from the dividend and append it to 11, then repeat: 114 / 642

On to step 5:
114 divided by 642 is 0 with a remainder of 114.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
Deduct 0 from 114 and we're left with 114.
Bring next digit (6) of the dividend behind the 114 and repeat the process: 1146 / 642

Moving on to step 6:
If we divide 1146 by 642, we get 1 and a remainder of 504.
Record the quotient 1 as the next digit in the result. 
Result so far: 901.0
If we take 642 away from 1146, we end up with 504.
Take the next digit (8) from the dividend and append it to 504, then repeat: 5048 / 642

Let's proceed to step 7:
5048 divided by 642 is 7 with a remainder of 554.
Record the quotient 7 as the next digit in the result. 
Result so far: 9017.0
Subtract 4494 from 5048 to get 554.
Bring next digit (5) of the dividend behind the 554 and repeat the process: 5545 / 642

Going ahead to step 8:
If we divide 5545 by 642, we get 8 and a remainder of 409.
Put 8 as the next digit of the answer. 
Result so far: 90178.0
The remainder is 409 after subtracting 5136 from 5545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

Going ahead to step 9:
The number 642 fits into 4090 6 times, leaving a remainder of 238.
Record the quotient 6 as the next digit in the result. 
Result so far: 90178.6
The remainder is 238 after subtracting 3852 from 4090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

On to step 10:
642 can be fit into 2380 3 times, resulting in a remainder of 454.
Use 3 as the next digit of our solution. 
Result so far: 90178.63
Deduct 1926 from 2380 and we're left with 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Moving on to step 11:
The number 642 fits into 4540 7 times, leaving a remainder of 46.
Record the quotient 7 as the next digit in the result. 
Result so far: 90178.637
Subtracting 4494 from 4540 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 12:
The number 642 fits into 460 0 times, leaving a remainder of 460.
The next digit of our result is 0. 
Result so far: 90178.637
If we subtract 0 from 460, we get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

On to step 13:
If we divide 4600 by 642, we get 7 and a remainder of 106.
The next digit of our result is 7. 
Result so far: 90178.63707
If we subtract 4494 from 4600, we get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Step 14:
642 goes into 1060 1 times with a remainder of 418.
The number 1 becomes the next digit in our result. 
Result so far: 90178.637071
If we take 642 away from 1060, we end up with 418.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Moving on to step 15:
The number 642 fits into 4180 6 times, leaving a remainder of 328.
Record the quotient 6 as the next digit in the result. 
Result so far: 90178.6370716
If we subtract 3852 from 4180, we get 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Advancing to step 16:
642 can be fit into 3280 5 times, resulting in a remainder of 70.
The number 5 becomes the next digit in our result. 
Result so far: 90178.63707165
Subtract 3210 from 3280 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

After the division, we end up with 90178.63707165 and a remainder of 7e-08.