value_format result is wrong

[603827804-16468]

Looker Version:

## Context

value_format definition:  

201 seconds to mm:ss should be 03:21.

3 * 60 + 21 = 201;

But the looker displayed result is wrong:

​​

The result is `03:20` , which is not right.

I create a Calculations:

The Calculations are right:

Also Visualization is correct：

Code:

```

view: demo {
  derived_table: {
    sql: select 201 as seconds ;;
  }

  dimension: seconds_duration {
    type: number
    sql: ${TABLE}.seconds ;;
  }
  
  measure: total_seconds_duration  {
    label: "Total seconds Duration"
    type: number
    sql:  ${seconds_duration} / cast(86400 as real);;
    value_format: "[hh]:mm:ss"
  }
}

```

Since the data needs to be displayed in a bar chart on the dashboard, if it is changed to manual calculation, it will become a string and the height on the bar chart is wrong.

So Can you please take a look or have a good solution?