The forces required to push down the lever of the toaster and to eject the toast up can vary depending on the design and mechanism of the toaster. It's difficult to provide precise numbers without knowing the specific toaster model and its mechanical details. However, I can give you a general understanding of the forces involved.
Pushing down the lever: The force required to push down the lever of the toaster is typically moderate. It's designed to be easy enough for users to operate comfortably. The force is often provided by a spring mechanism within the toaster, which makes it easier to depress the lever. The force required could be in the range of 5 to 20 Newtons (N) or so, but again, this can vary based on the toaster's design.
Ejecting the toast up: The force required to eject the toast up is generally higher than pushing down the lever. When the toasting process is complete, the spring mechanism responsible for holding the lever down is released, and this causes the toast to pop up. The force needed to eject the toast depends on the strength of the spring used in the toaster. It could be in the range of 10 to 30 Newtons or more.
Keep in mind that these force estimates are rough and can differ significantly based on the toaster's design, the quality of its components, and other factors. If you have a specific toaster model in mind, you may be able to find more precise information in the product's user manual or specifications provided by the manufacturer.