Answer:
13
Explanation:
253 , 248 243 238 233 228 223 218 213 208 203 198 193 188 183 178 173 168 163 158 153 148 143 138 133 128 123 118 113 108 103 98 93 88 83 78 73 68 63 58 53 48 43 38 33 28 23 18 13 i
ts 13 i thinki just counted down ^^
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