Inheritance Calculation (Japanese resident, Assets and siblings in Canada)

Could someone please make this calculation? I am hearing different things! I am the only family member in Japan and have lived here for 15 years, spousal visa.

Total Inheritance – Cash only 400,000,000 JPY equivalent – cash in Canada, other siblings in Canada

The deceased is father, wife deceased. Will says cash is to be divided equally among the 4 siblings.

4 statutory heirs including myself.

Thanks in advance