I hope this helps you
1=3=180-68=112
2=68
411300/4 = 102825
42800/4 = 10700
102825 - 10700 = 92125 (Answer)
Verify: 92125 * 4 + 42800 = 411300
You can do some rounding and reach that 450 goes into 50 9 times, so this won't be that far. So, 51 * 9 is equal to 459, and there is a remainder of 11. So, you can put it in mixed fraction form as:

And
that's your answer!
2y(4z)=8yz
each major road of city y you have 4 different routes so if there're 2 routes of city y then double the number of routes and you get 8 different roads to travel in from x to z through y