This example will remove the ($2.00) string that is added to any numeric value in the cart. Replace 123, 124, and 125 with your field IDs.

add_filter( 'wc_fp_cart_item_data', 'modify_frm_woo_display', 10, 2 );
function modify_frm_woo_display( $values, $args ) {
    if ( in_array( $args['field']->id, array( 123, 124, 125 ) ) ) {
        $end_position = strpos( $values['display'], ' (' );
        $values['display'] = substr( $values['display'], 0, $end_position );
    }
    return $values;
}

This example will remove the ($2.00) string that is added to any numeric value in the cart for specific field types. Replace number with the type of field in your cart.

add_filter( 'wc_fp_cart_item_data', 'modify_frm_woo_display_for_number_fields', 10, 2 );
function modify_frm_woo_display_for_number_fields( $values, $args ) {
    if ( $args['field']->type =="number") {
        $end_position = strpos( $values['display'], ' (' );
        $values['display'] = substr( $values['display'], 0, $end_position );
		
    }
    return $values;
}