Example Depot

// Create via a string
BigDecimal bd1 = new BigDecimal("123456789.0123456890");

// Create via a long
BigDecimal bd2 = BigDecimal.valueOf(123L);

bd1 = bd1.add(bd2);
bd1 = bd1.multiply(bd2);
bd1 = bd1.subtract(bd2);
bd1 = bd1.divide(bd2, BigDecimal.ROUND_UP);
bd1 = bd1.negate();