[7th repost] What is the force of magnetic repulsion?

Question

Two parallel lead cylindrical wires have diameters D=4mm
and the distance between their axes is L=5mm.
Both wires are in superconductive state.
The wires carry currents 60A each in opposite directions.

What is the force of magnetic relpulsion F between
the wires per unit length (per 1 meter)?

Notes:
(a) Meissner effect: magnetic field does penetrate inside
superconductive lead.

(b) Easy-to-use magnetic force calculator can be found here:
http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/wirfor.html

Answer 1

What's the big deal ?

The force is repulsive and is given by iB/meter

where i is the current and B is the Magnetic Field produced.