42379993 ÷ 428 
Let's see how many times 428 fits into 42379993.

Let's proceed to step 1:
428 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 428

Advancing to step 2:
When dividing 42 by 428, we get 0 with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Grab the next digit (3) from the dividend, add it to 42, then carry on: 423 / 428

Advancing to step 3:
423 divided by 428 is 0 with a remainder of 423.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 423, we get 423.
Include the next digit (7) from the dividend after 423, then repeat: 4237 / 428

Let's proceed to step 4:
When dividing 4237 by 428, we get 9 with a remainder of 385.
Write down 9 as next digit of the result. 
Result so far: 9.0
Subtract 3852 from 4237 to get 385.
Append the next digit (9) from the dividend to 385 and continue with: 3859 / 428

Going ahead to step 5:
The number 428 fits into 3859 9 times, leaving a remainder of 7.
Put 9 as the next digit of the answer. 
Result so far: 99.0
If we take 3852 away from 3859, we end up with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 428

Let's proceed to step 6:
The number 428 fits into 79 0 times, leaving a remainder of 79.
Write down 0 as next digit of the result. 
Result so far: 990.0
The remainder is 79 after subtracting 0 from 79.
Bring next digit (9) of the dividend behind the 79 and repeat the process: 799 / 428

Let's proceed to step 7:
428 can be fit into 799 1 times, resulting in a remainder of 371.
Write down 1 as next digit of the result. 
Result so far: 9901.0
Deduct 428 from 799 and we're left with 371.
Append the next digit (3) from the dividend to 371 and continue with: 3713 / 428

Going ahead to step 8:
428 can be fit into 3713 8 times, resulting in a remainder of 289.
Write down 8 as next digit of the result. 
Result so far: 99018.0
Subtract 3424 from 3713 to get 289.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2890, and continue the process.

Step 9:
428 can be fit into 2890 6 times, resulting in a remainder of 322.
Write down 6 as next digit of the result. 
Result so far: 99018.6
Subtracting 2568 from 2890 leaves us with 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

Step 10:
The number 428 fits into 3220 7 times, leaving a remainder of 224.
Put 7 as the next digit of the answer. 
Result so far: 99018.67
Subtract 2996 from 3220 to get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Step 11:
If we divide 2240 by 428, we get 5 and a remainder of 100.
The number 5 becomes the next digit in our result. 
Result so far: 99018.675
Subtracting 2140 from 2240 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

On to step 12:
If we divide 1000 by 428, we get 2 and a remainder of 144.
Write down 2 as next digit of the result. 
Result so far: 99018.6752
If we take 856 away from 1000, we end up with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Going ahead to step 13:
If we divide 1440 by 428, we get 3 and a remainder of 156.
Use 3 as the next digit of our solution. 
Result so far: 99018.67523
If we take 1284 away from 1440, we end up with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Let's proceed to step 14:
When dividing 1560 by 428, we get 3 with a remainder of 276.
The number 3 becomes the next digit in our result. 
Result so far: 99018.675233
If we take 1284 away from 1560, we end up with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

The final result is 99018.675233 with a remainder of 2.76e-05.