David Reuben (born 1941) and Simon Reuben (born 1944) are British businessmen. In 2023, they were named as the fourth richest family in the UK by the Sunday Times Rich List with a net worth of £24.4 billion.[1] (wikipedia)
If you can't make 40% on your money in Russia, you're a fool.
I can't read a computer screen and never use a calculator. It's all in my head and by hand.