This is the toaster that I have. I wish to clean it from inside. It has got a kind of wire mesh inside it. What's the way out?
For a start I'd hold the toaster upside down and attempt using a vacuum cleaner with a narrow nozzle attachment in combination with gentle shaking to try and dislodge the dust. Failing that compressed air is available in cans and is often used for removing dust from electronic devices and computer systems. The following is one example from Amazon although you should be able to find alternatives at a local computer or electronics retailer:
Although it may be tempting to use a brush or similar to remove the dust I'd recommend against it because the heating element may have become quite brittle through constant heating and cooling cycles. Also if some of the bristles become detached during cleaning you may either leave behind toxic plastic or metal fibers that may cause a short-circuit.
It goes without saying to do it with the power cord removed for safety. A toaster will be electrically safe as soon as power has been removed, the same assumption should not be made with other appliances such as microwave ovens and TVs.