Currency symbol with float decimal or precision setting in qweb / xml
### This is for the QWEB report syntax ####
<span t-esc="o.currency_id.symbol"/>
<span t-field="l.price_subtotal" t-options="{'widget': 'float', 'precision': 2}"/>
### This is for the FORM view syntax ###
<field name="yourfield name" digits="[42, 5]"/>
it will display 5 decimal number