An investor has a share portfolio of $100,000 that is 70% geared, with a maximum permissible LVR of 75%. The market falls by 10%, triggering a margin call. The investor decides to reduce the loan balance back to a 70% LVR. How much cash will the investor be required to deposit into the loan? (Ignore interest and provide a whole number without text or a dollar sign. For example: 23000)