We divide 42117893 by 310
We want to figure out the number of times 42117893 can be divided by 310.

Moving on to step 1:
The number 310 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
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 / 310

Step 2:
The number 310 fits into 42 0 times, leaving a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Grab the next digit (1) from the dividend, add it to 42, then carry on: 421 / 310

Step 3:
If we divide 421 by 310, we get 1 and a remainder of 111.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 310 from 421 leaves us with 111.
Take the next digit (1) from the dividend and append it to 111, then repeat: 1111 / 310

Step 4:
310 goes into 1111 3 times with a remainder of 181.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we subtract 930 from 1111, we get 181.
Include the next digit (7) from the dividend after 181, then repeat: 1817 / 310

On to step 5:
1817 divided by 310 is 5 with a remainder of 267.
Record the quotient 5 as the next digit in the result. 
Result so far: 135.0
If we subtract 1550 from 1817, we get 267.
Append the next digit (8) from the dividend to 267 and continue with: 2678 / 310

Moving on to step 6:
310 can be fit into 2678 8 times, resulting in a remainder of 198.
Write down 8 as next digit of the result. 
Result so far: 1358.0
Subtract 2480 from 2678 to get 198.
Fetch the next digit (9) from the dividend, attach it to 198 and continue: 1989 / 310

Going ahead to step 7:
1989 divided by 310 is 6 with a remainder of 129.
Write down 6 as next digit of the result. 
Result so far: 13586.0
If we take 1860 away from 1989, we end up with 129.
Take the next digit (3) from the dividend and append it to 129, then repeat: 1293 / 310

Moving on to step 8:
When dividing 1293 by 310, we get 4 with a remainder of 53.
The next digit of our result is 4. 
Result so far: 135864.0
The remainder is 53 after subtracting 1240 from 1293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 9:
310 can be fit into 530 1 times, resulting in a remainder of 220.
Record the quotient 1 as the next digit in the result. 
Result so far: 135864.1
The remainder is 220 after subtracting 310 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 10:
310 can be fit into 2200 7 times, resulting in a remainder of 30.
Record the quotient 7 as the next digit in the result. 
Result so far: 135864.17
Subtract 2170 from 2200 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 11:
The number 310 fits into 300 0 times, leaving a remainder of 300.
Use 0 as the next digit of our solution. 
Result so far: 135864.17
Subtracting 0 from 300 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 12:
3000 divided by 310 is 9 with a remainder of 210.
The next digit of our result is 9. 
Result so far: 135864.1709
If we subtract 2790 from 3000, we get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 13:
310 goes into 2100 6 times with a remainder of 240.
Write down 6 as next digit of the result. 
Result so far: 135864.17096
Deduct 1860 from 2100 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 14:
2400 divided by 310 is 7 with a remainder of 230.
Use 7 as the next digit of our solution. 
Result so far: 135864.170967
Subtract 2170 from 2400 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 15:
310 goes into 2300 7 times with a remainder of 130.
Record the quotient 7 as the next digit in the result. 
Result so far: 135864.1709677
The remainder is 130 after subtracting 2170 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

The final result is 135864.1709677 with a remainder of 1.3e-06.