Consider the following apple mass table.
| Name | Mass (g) | Mass (g) | Mass (g) | Mass (g) | Mass (g) | Mass (g) |
|---|---|---|---|---|---|---|
| Ferdian | ||||||
| Belle |
Given that the value of is . If they then exchange apples so that Ferdian carries the heavy apples and Belle carries the light ones, the difference in the mass of apples carried by Ferdian and Belle is ....