sql server - SQL Division returning odd value -

so have 2 sum values, return. divide 1 of them other, goal spit out basic value. value returned on place.

i assume screwed "cast" not sure here.

it impossible me share entirety of sql generates this. focus on end results here start outer apply:

this me calling outer apply values display, , attempt @ dividing them:

  ,verifyblock.numa [numerator]   ,verifyblock.denominator   ,(isnull(((verifyblock.numa) / nullif(verifyblock.denominator,0)),0)) [division] 

this outer apply generates above:

outer apply (select case when cast(tmpdc2.[14]as decimal(10,2)) <= 0 , (case when t4mathblock.[value] >0 t4mathblock.[value] else '0.00' end)<= 0  '0.00' else     (case when cast(tmpdc2.[14]as decimal(10,2)) <  (case when t4mathblock.[value] >0 t4mathblock.[value] else '0.00' end) cast(tmpdc2.[14]as decimal(10,2)) else  (case when t4mathblock.[value] >0 t4mathblock.[value]                 else '0.00' end) end)                                         end [amount]                                      ##tempdisclosure tmpdc2                                      tmpdc1.[student number] = tmpdc2.[student number]                                      )[af]                       tmpdc1.[student number] = tmpdc.[student number]                 )[verifyblock] 

sorry if formatting wonky.

i know values generated by: verifyblock.numa , verifyblock.denominator solid. values return 32747682.64 , 78740189.20 (respectively)

the division though returns: 947860.602435 when should return: 0.4158954019886963

so heck did go wrong here?