Complex sentence: The robbers thought they were going to steal £3.2 million in cash, but they found three tonnes of gold bullion and stole £26 million (approximately £million in pounds) worth of gold, diamonds and cash.
Split into simpler sentences: The robbers thought they were going to steal £3.2 million in cash. However, when they arrived, they found three tonnes of gold bullion and stole £26 million (today approx million) worth of gold, diamonds and cash.