Array Plus and minus related issues

Array Plus and minus problems
Known quantity groups A and B.

Array A:
Array (
  
  Array (
    ' Cust_no ' = ' 310f6 1va5a ',
    ' Lotno ' = ' 2X15 ',
    ' Part_count ' = ' 32 ',
  ),
  
  Array (
    ' Cust_no ' = ' 310f6 1va5a ',
    ' Lotno ' = ' 2z25 ',
    ' Part_count ' = ' 32 ',
  ),
)

Array B:

Array (
  
  Array (
    ' Cust_no ' = ' 310f6 1va5a ',
    ' Total ' = ' 48 ',
  ),
)

When the array a cust_no is 310f6 1va5a, the corresponding total is 32+32=64, and the total amount of the array B cust_no to 310f6 1va5a is 48.
What do you want to do with array A when the sum of array B is 48 o'clock? What is the remaining result of array a?

In this case,
Get the result of array A:

Array A:
Array (
  
  Array (
    ' Cust_no ' = ' 310f6 1va5a ',
    ' Lotno ' = ' 2X15 ',
    ' Part_count ' = ' 32 ',
  ),
  
  Array (
    ' Cust_no ' = ' 310f6 1va5a ',
    ' Lotno ' = ' 2z25 ',
    ' Part_count ' = ' 16 ',
  ),
)

Result of remaining array a:

Array A:
Array (
  
  Array (
    ' Cust_no ' = ' 310f6 1va5a ',
    ' Lotno ' = ' 2X15 ',
    ' Part_count ' = ' 0 ',
  ),
  
  Array (
    ' Cust_no ' = ' 310f6 1va5a ',
    ' Lotno ' = ' 2z25 ',
    ' Part_count ' = ' 16 ',
  ),
)

How can you get such a result?

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------Solution--------------------

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