Let's divide 42388340 by 402
We want to figure out the number of times 42388340 can be divided by 402.

Advancing to step 1:
When dividing 4 by 402, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 402

Let's proceed to step 2:
402 can be fit into 42 0 times, resulting in a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Fetch the next digit (3) from the dividend, attach it to 42 and continue: 423 / 402

On to step 3:
423 divided by 402 is 1 with a remainder of 21.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 402 from 423, we get 21.
Append the next digit (8) from the dividend to 21 and continue with: 218 / 402

On to step 4:
The number 402 fits into 218 0 times, leaving a remainder of 218.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we take 0 away from 218, we end up with 218.
Bring next digit (8) of the dividend behind the 218 and repeat the process: 2188 / 402

Step 5:
The number 402 fits into 2188 5 times, leaving a remainder of 178.
Record the quotient 5 as the next digit in the result. 
Result so far: 105.0
The remainder is 178 after subtracting 2010 from 2188.
Grab the next digit (3) from the dividend, add it to 178, then carry on: 1783 / 402

Let's proceed to step 6:
1783 divided by 402 is 4 with a remainder of 175.
The next digit of our result is 4. 
Result so far: 1054.0
The remainder is 175 after subtracting 1608 from 1783.
Bring next digit (4) of the dividend behind the 175 and repeat the process: 1754 / 402

Advancing to step 7:
402 can be fit into 1754 4 times, resulting in a remainder of 146.
Record the quotient 4 as the next digit in the result. 
Result so far: 10544.0
If we subtract 1608 from 1754, we get 146.
Append the next digit (0) from the dividend to 146 and continue with: 1460 / 402

Advancing to step 8:
402 goes into 1460 3 times with a remainder of 254.
Record the quotient 3 as the next digit in the result. 
Result so far: 105443.0
The remainder is 254 after subtracting 1206 from 1460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Step 9:
2540 divided by 402 is 6 with a remainder of 128.
The number 6 becomes the next digit in our result. 
Result so far: 105443.6
The remainder is 128 after subtracting 2412 from 2540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Moving on to step 10:
If we divide 1280 by 402, we get 3 and a remainder of 74.
Record the quotient 3 as the next digit in the result. 
Result so far: 105443.63
Subtracting 1206 from 1280 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 11:
402 goes into 740 1 times with a remainder of 338.
The next digit of our result is 1. 
Result so far: 105443.631
The remainder is 338 after subtracting 402 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Moving on to step 12:
402 goes into 3380 8 times with a remainder of 164.
Put 8 as the next digit of the answer. 
Result so far: 105443.6318
Subtracting 3216 from 3380 leaves us with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Advancing to step 13:
402 can be fit into 1640 4 times, resulting in a remainder of 32.
The next digit of our result is 4. 
Result so far: 105443.63184
Subtract 1608 from 1640 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.

Step 14:
402 can be fit into 320 0 times, resulting in a remainder of 320.
Put 0 as the next digit of the answer. 
Result so far: 105443.63184
Subtract 0 from 320 to get 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 15:
If we divide 3200 by 402, we get 7 and a remainder of 386.
The next digit of our result is 7. 
Result so far: 105443.6318407
Subtract 2814 from 3200 to get 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

On to step 16:
3860 divided by 402 is 9 with a remainder of 242.
Put 9 as the next digit of the answer. 
Result so far: 105443.63184079
Deduct 3618 from 3860 and we're left with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

In conclusion, the division gives 105443.63184079 with a balance of 2.42e-07.