Answer
$29,232,242$
Work Step by Step
Using the table and that the place values are $1,20,18\cdot20=360,18\cdot20^2=7200,18\cdot20^3=144000, 18\cdot20^4=2,880,000$:
The numerical value as a Hindu- Arabic numeral is: $10\cdot2,880,000+3\cdot144000+0\cdot7200+0\cdot360+12\cdot20+2\cdot1=28,800,000+432000+0+0+240+2=29,232,242$