Mathematics trick for some multiplication

Today I'm going to share all of you a new trick for calculating of mutiplication of10 base 100 base and 1000 base so on 10000........base

<p dir="auto">for 10 base<br /> let us consider a number as 1X, 1Y We have to multiply this two number.<br /> Stp 1: write down the last digit of the no. separately in right side. and also all no. rewrite in left side<br /> LIKE<br /> 1X/+X or -X<br /> 1Y/+Y or -Y <hr /> <p dir="auto">Stp 2: multiply the digit of the right side directly.<br /> LIKE<br /> 1X/+X or -X<br /> 1Y/+Y or -Y <hr /> <pre><code> /XY <p dir="auto">St3: Add down the digits daigonaly<br /> Like<br /> 1X/+X or -X<br /> 1Y/+Y or -Y <hr /> <pre><code> 1X +Y / XY <p dir="auto">For example<br /> 18 *15<br /> 18/8<br /> 15/5 <hr /> <p dir="auto">23 /40<br /> finally 23+4/0= 270 <p dir="auto">Now this 100 base trick<br /> the rules is same as that of 10 base which is given above<br /> let's try for 107*108<br /> 107/07<br /> 1O8/08 <hr /> <pre><code>107+8 /56 <p dir="auto">i.e. 115/56<br /> final ans 11556<br /> so same way for 1000 base 10000........ <pre><code>N.B. : For 10 Base no right side should be taken only 1 digit, also for 100 Base no right side should be taken two digits. and similarly for 1000 Base no right side should be taken three digits.