70045 ÷ 1 = 70045 R0
Alright, let's work through the division of 70045 by 1 step by step.

Step 1:
1 goes into 7 7 times with a remainder of 0.
Write down 7 as next digit of of the result. 
Result so far: 7
Subtract 7 from 7 to get 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 1

Step 2:
1 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of of the result. 
Result so far: 70
Subtract 0 from 0 to get 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 1

Step 3:
1 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of of the result. 
Result so far: 700
Subtract 0 from 0 to get 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 1

Step 4:
1 goes into 4 4 times with a remainder of 0.
Write down 4 as next digit of of the result. 
Result so far: 7004
Subtract 4 from 4 to get 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 1

Step 5:
1 goes into 5 5 times with a remainder of 0.
Write down 5 as next digit of of the result. 
Result so far: 70045
Subtract 5 from 5 to get 0.

The final result is 70045 with a remainder of 0.