Shown is a $2$D drawing of a spherical roller bearing inner ring. Develop a formula for how to calculate each diameter at both points. For example, if the overall width is $37$ mm$.$ The Race$\_$Diameter$\_$L $=105\mathrm{.}796$ and Race$\_$Diameter$\_$R $=106\mathrm{.}405.$ Another example, if the overall width is $40$mm $($nominal width$).$ The Race$\_$Diameter$\_$L $=106\mathrm{.}071$ and Race$\_$Diameter$\_$R $=106\mathrm{.}071.$ Please provide a formula for both race diameter values as the width changes.