How to add a DC bias?
You can just use an op-amp adder, or just a voltage divider if you can live with higher output impedance and low input impedance. 

For example (voltage divider): 







simulate this circuit &ndash; Schematic created using CircuitLab

R1 is picked arbitrarily, and the remaining two values are chosen so that R2||R3 = 2.02K (so the output voltage changes 1.00V for a 100V change in the input) and 5V * (R1||R2/(R3+R1||R2) = 1.40V 

Output impedance is R1||R2||R3 = 2.0K 

Edit: Depending on the accuracy you need (which you did not state) you can use the closest E96 values of 1% resistors (eg. 7.15K, 2.80K) which would give you a gain of 100:0.996 and a bias of 1.393V (nominally). For a higher accuracy divider you could use available 0.1% resistors and combine them with 1% resistors to get very close to the desired values (or simply use something close and adjust the result digitally).