1235-(5678•5670):78900+690467•123000 =
1235 - (32213460):78900 + 84833310

First, solve the multiplication in the parentheses:
1235 - 32213460/78900 + 84833310

Next, perform the division:
1235 - 409 + 84833310

Finally, add:
84833310 + 1235 - 409 = 84834235

So, 1235-(5678•5670):78900+690467•123000 = 84834235.