78465448 ÷ 642 
We're looking to find how many times 642 goes into 78465448.

Going ahead to step 1:
7 divided by 642 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 642

Moving on to step 2:
642 goes into 78 0 times with a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Bring next digit (4) of the dividend behind the 78 and repeat the process: 784 / 642

On to step 3:
When dividing 784 by 642, we get 1 with a remainder of 142.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 642 from 784, we get 142.
Append the next digit (6) from the dividend to 142 and continue with: 1426 / 642

Advancing to step 4:
If we divide 1426 by 642, we get 2 and a remainder of 142.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
The remainder is 142 after subtracting 1284 from 1426.
Take the next digit (5) from the dividend and append it to 142, then repeat: 1425 / 642

Going ahead to step 5:
1425 divided by 642 is 2 with a remainder of 141.
Put 2 as the next digit of the answer. 
Result so far: 122.0
If we take 1284 away from 1425, we end up with 141.
Include the next digit (4) from the dividend after 141, then repeat: 1414 / 642

Advancing to step 6:
642 goes into 1414 2 times with a remainder of 130.
Record the quotient 2 as the next digit in the result. 
Result so far: 1222.0
Subtract 1284 from 1414 to get 130.
Include the next digit (4) from the dividend after 130, then repeat: 1304 / 642

Going ahead to step 7:
When dividing 1304 by 642, we get 2 with a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 12222.0
Deduct 1284 from 1304 and we're left with 20.
Grab the next digit (8) from the dividend, add it to 20, then carry on: 208 / 642

Going ahead to step 8:
When dividing 208 by 642, we get 0 with a remainder of 208.
Use 0 as the next digit of our solution. 
Result so far: 122220.0
The remainder is 208 after subtracting 0 from 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

On to step 9:
When dividing 2080 by 642, we get 3 with a remainder of 154.
The next digit of our result is 3. 
Result so far: 122220.3
If we subtract 1926 from 2080, we get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

On to step 10:
642 can be fit into 1540 2 times, resulting in a remainder of 256.
The next digit of our result is 2. 
Result so far: 122220.32
The remainder is 256 after subtracting 1284 from 1540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Let's proceed to step 11:
If we divide 2560 by 642, we get 3 and a remainder of 634.
Put 3 as the next digit of the answer. 
Result so far: 122220.323
If we subtract 1926 from 2560, we get 634.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6340, and continue the process.

Going ahead to step 12:
6340 divided by 642 is 9 with a remainder of 562.
Put 9 as the next digit of the answer. 
Result so far: 122220.3239
The remainder is 562 after subtracting 5778 from 6340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

Going ahead to step 13:
When dividing 5620 by 642, we get 8 with a remainder of 484.
Use 8 as the next digit of our solution. 
Result so far: 122220.32398
Subtract 5136 from 5620 to get 484.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4840, and continue the process.

Advancing to step 14:
When dividing 4840 by 642, we get 7 with a remainder of 346.
Put 7 as the next digit of the answer. 
Result so far: 122220.323987
Subtract 4494 from 4840 to get 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Going ahead to step 15:
3460 divided by 642 is 5 with a remainder of 250.
Use 5 as the next digit of our solution. 
Result so far: 122220.3239875
Subtracting 3210 from 3460 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 16:
642 goes into 2500 3 times with a remainder of 574.
Use 3 as the next digit of our solution. 
Result so far: 122220.32398753
The remainder is 574 after subtracting 1926 from 2500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5740, and continue the process.

Our division results in 122220.32398753 with a remaining 5.74e-07.