Tds payment along with interest due to delay

TDS was required to be deducted at the time of making payments including the advances.

From the date the tax was deductible to the date on which such tax was deducted is to be considered here.

Dates of advances and other payments made, and the date of actual TDS deduction made. The interest shall be 1% per month or part thereof of the TDS amount. 

Advance made on dated 24-04-2013, You are required to deposit TDS on advance amount Rs.180000.00 (i.e. Rs.20000.00)

Bill submitted on dt . 02-07-2013    =Rs.471912.00

Less: Amount on which TDS

deduct able but not deducted           =Rs.200000.00

Balance amount on which TDS

to be deduct                                       =  Rs.271912.00

TDS @ 10%                                        =    Rs.27191.00

Total TDS will be deduct able = Rs.20000+Rs.27191 =Rs.47191.00

Interest for TDS ( from 25.04.13 to 06.09.13 & from 02.07.13 to 06.09.2013) =Rs.20000 X 1.5% X 6 month+ Rs.27191 X 1.5%X 3 month) = Rs.1800.00+Rs.1224.00 =Rs.3024.00

Total Amount of TDS & Interest =Rs.47191.00+Rs.3024.00 =Rs.50215.00

Thanks & Regards

pls explain how yu arrived Rs 2000/- for 180000/-, not clear.