Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> a688a7d00982ab04e37e67dccd79eb8eb46ba9468d45800e4dc6d38f60cb612c:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^