Rhod fails to correctly calculate the mean bean measurement

Here's a brief description of the contestant's attempt. Someone's probably working writing up more detail!

Rhod used a tape measure to measure the circumference of the caravan and the length of one baked bean, using a calculator to work out that the perimeter of the caravan would be 1,275 baked beans. However, his answer was way out because he didn't take into account the sauce on a bean, when taking his mean bean measurement.

(Written by Taskmaster Wiki contributors)