I've search some reference but still got no luck about divide operations in 
ansible.

# default/main.yml
mariadb_setmem: "{{ ansible_memtotal_mb *1024*1024 }}"
mariadb_misc_query_prealloc_size: "{{ mariadb_setmem *0.01 }}"

# task/main.yml
- name: Debugging Value
  debug:
    msg: "{{ mariadb_misc_query_prealloc_size }}"

And got error.
fatal: [vagrant01] => Failed to template {{ 
mariadb_misc_query_prealloc_size }}: Failed to template {{ mariadb_setmem 
*0.01 }}: an unexpected type error occurred. Error was can't multiply 
sequence by non-int of type 'float'

Is there any hints to got the results of the math operations and round it?
Any helps are appreciated. 



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